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December | 1 | 2 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 2, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 3 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 3, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 4 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 4, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 5 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 5, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 6 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 6, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
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7 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 7, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 8 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 8, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 9 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 9, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 10 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 10, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 11 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 11, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 12 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 12, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 13 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 13, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
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14 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 14, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 15 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 15, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 16 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 16, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 17 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 17, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 18 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 18, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 19 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 19, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 20 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 20, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
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21 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 21, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 22 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 22, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363 - SEMINARS: Arithmetic Statistics Seminar: Realising certain semi-direct products as Galois groups
Speaker: Andreea Iorga – University of Chicago 3:00 PM-4:00 PM January 22, 2024 1 Oxford Street, Cambridge, MA 02138 USA In this talk, I will prove that, under a specific assumption, any semi-direct product of a $p$-group $G$ with a group $\Phi$ of order prime-to-$p$ can appear as the Galois group of a tower of extensions $M/L/K$ with the property that $M$ is the maximal $p$-extension of $L$ that is unramified everywhere, and $\Gal(M/L) = G$. At the end, if time permits, I will show that a nice consequence of this is that any local ring admitting a surjection to $\mathbb{Z}_5$ or $\mathbb{Z}_7$ with finite kernel can be written as a universal everywhere unramified deformation ring.
| 23 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 23, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 24 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 24, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363 - CMSA EVENT: CMSA New Technologies in Mathematics Seminar: Approaches to the formalization of differential geometry
Speaker: Heather Macbeth – Fordham University Dept. of Mathematics 2:00 PM-3:00 PM January 24, 2024 20 Garden Street, Cambridge, MA 02138 In the last five years, there has been early work on the computer formalization of differential geometry. I will survey the projects I am aware of. I will also describe two projects of my own, as case studies for typical challenges. The first (joint with Floris van Doorn) is an exercise in developing suitable abstractions, the second (joint with Mario Carneiro) is an exercise in developing suitable automation. https://harvard.zoom.us/j/95706757940?pwd=dHhMeXBtd1BhN0RuTWNQR0xEVzJkdz09
Password: cmsa - HARVARD-MIT COMBINATORICS SEMINAR: Richard P. Stanley Seminar in Combinatorics: A diagrammatic realization of the Okada algebra
Speaker: Jeanne Scott – Brandeis 4:15 PM-5:15 PM January 24, 2024
It is well known that the Young lattice is the Bratelli diagram of the symmetric groups, expressing how irreducible representations restrict from S(n) to S(n-1). In 1975 Stanley discovered a similar lattice called the Young-Fibonacci lattice which was later realized as the Bratelli diagram of a family of algebras by Okada in 1994. In joint work with Florent Hivert (Université Paris-Sud) we realize the n-th Okada algebra as a diagram algebra with a multiplicative/monoid basis consisting of n-strand Temperley-Lieb diagrams, each equipped with a “height” labeling of its strands. The proof involves a diagrammatic version of Fomin’s Robinson-Schensted correspondence for the Young-Fibonacci lattice. This basis is cellular, which affords us with a novel, diagrammatic presentation of the irreducible representations of the Okada algebra (i.e. cell modules). =============================== For more info, see https://math.mit.edu/combin/ - GAUGE-TOPOLOGY-SYMPLECTIC SEMINAR: Gauge Theory and Topology Seminar: Flying circles and non-commutative algebra
Speaker: Iva Halacheva – Northeastern University 4:30 PM-5:30 PM January 24, 2024 1 Oxford Street, Cambridge, MA 02138 USA
I will describe a machine that lets us go between certain problems in topology and problems in non-commutative algebra. One main question of interest to topologists is how to distinguish between different knotted objects – a powerful tool that has been developed to address this are the so-called universal finite-type invariants. On the algebraic side, this structure translates to finding solutions of sets of equations in quantum algebra, in the graded setting. In this talk, we will in particular consider a certain class of knotted tubes in 4-space, pictured as movies of flying circles, and show how they are related to a class of equations originally introduced by Masaki Kashiwara and Michele Vergne.
| 25 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 25, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363 - THURSDAY SEMINAR SEMINAR: Thursday Seminar: Ravenel’s Telescope Conjecture: Background and overview
Speaker: Michael Hopkins – Harvard 3:30 PM-5:30 PM January 25, 2024 1 Oxford Street, Cambridge, MA 02138 USA This semester we will go through the work of Burklund, Hahn, Levy and Schlank on the construction of counterexamples to the telescope conjecture.
| 26 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 26, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 27 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 27, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
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28 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 28, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 29 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 29, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363
| 30 - CMSA EVENT: CMSA General Relativity Seminar: A quasi-local mass in general relativity
Speaker: Aghil Alaee – Clark University 11:00 AM-12:00 PM January 30, 2024 20 Garden Street, Cambridge, MA 02138 In this talk, we define a new gauge-independent quasi-local mass and energy with respect to the Minkowski spacetime. In contrast to other quasi-local masses, this new quasi-local mass/energy has a quasi-local proof of positivity. This positivity property is for spacelike surfaces with any topology. Moreover, we show that it has desired asymptotic behaviors at null and spatial infinity of asymptotically flat spacetimes. Rigidity is also established in that vanishing energy implies that the 2-surface arises from an embedding into Minkowski space, and conversely, the mass vanishes for any such surface. This is joint work with M. Khuri and S.T. Yau.
Zoom: https://harvard.zoom.us/j/7855806609 Password: cmsa - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 30, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363 - SEMINARS: Mathematical Picture Language Seminar: Inverse theorems and approximate structure
Speaker: Frederick Manners – University of California, San Diego 4:30 PM-5:30 PM January 30, 2024 We call a function f linear if f(x+y) = f(x) + f(y) holds for all x,y. It is natural to call f “99% linear” if instead, this identity holds for most pairs (x,y); say, 99% of
pairs. Similarly, we could say f is “1% linear” if this identity holds 1% of the time. A natural question is then: what can we say about the structure of “99% linear” or “1% linear” functions? Are they always just perturbations of true 100% linear functions, or are there other examples? Given almost any algebraic definition, you can similarly ask about its approximate variants, and if you can prove a strong positive statement, it tends to have applications. In particular, I will discuss how 1% linear functions relate to the Polynomial Freiman-Ruzsa conjecture, and how 1% polynomial functions relate to the Inverse Theorem for the Gowers norms. Zoom QR Code & Link:
https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09
Passcode: 657361
https://mathpicture.fas.harvard.edu/seminar
| 31 - CMSA EVENT: CMSA Member Seminar: On complete Calabi-Yau metrics and Monge-Ampere equations
Speaker: Freid Tong – Harvard 12:00 PM-1:00 PM January 31, 2024-February 2, 2024 Calabi-Yau metrics are central objects in K\”ahler geometry and also string theory. The existence of Calabi-Yau metrics on compact manifolds was answered by Yau in his solution of the Calabi conjecture, but the situation in the non-compact setting is much more delicate, and many questions related to the existence and uniqueness of non-compact Calabi-Yau metrics remain unanswered. I will give an introduction to this subject and discuss some ongoing joint work with T. Collins and S.-T. Yau, on a new relationship between complete Calabi-Yau metrics and a new Monge-Ampere equation. Friday, Feb. 2nd at 12pm, with lunch, lounge at CMSA (20 Garden Street). Also by Zoom: https://harvard.zoom.us/j/92410768363 - SEMINARS: Dynamics, Geometry and Moduli Spaces Seminar: Stretch maps, after Thurston
Speaker: Rafael Saavedra – Harvard 4:00 PM-5:00 PM January 31, 2024 See webpage for more details: https://people.math.harvard.edu/~ctm/sem/ - HARVARD-MIT COMBINATORICS SEMINAR: Richard P. Stanley Seminar in Combinatorics: The doubly asymmetric simple exclusion process
Speaker: Yuhan Jiang – Harvard 4:15 PM-5:15 PM January 31, 2024 The multispecies ASEP (mASEP) is a Markov chain in which particles of different species hop on a one-dimensional lattice. The doubly ASEP (DASEP) is like the mASEP, but it additionally allows spontaneous change of species. We will introduce two new Markov chains that the DASEP lumps to, which give relations between sums of steady state probabilities. We also give explicit formulas for the stationary distribution of a particular infinite family. =============================== For more info, see https://math.mit.edu/combin/
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