ALGEBRAIC DYNAMICS, SEMINARS
April 14, 2022 4:00 pmLet X be a projective variety and let f be a dominant endomorphism of f, both of which are defined over a number field K. We consider the question of...
Read more
CMSA EVENTS
April 13, 2022 9:30 amThe standard definition of symmetries of a structure given on a set S (in the sense of Bourbaki) is the group of bijective maps S to S, compatible with this...
Read more
SEMINARS, CMSA EVENTS
April 13, 2022 8:30 pm**Note special time** It has been known that the four-dimensional abelian chiral gauge theories of an anomaly-free set of Wely fermions can be formulated on the lattice preserving the exact...
Read more
SEMINARS, NUMBER THEORY
April 13, 2022 3:00 pmAbout 2 years ago, I have given a new construction of the Euler system of cyclotomic units via Eisenstein congruences in which the p-adic Langlands correspondence for GL_2(\Q_p) plays a...
Read more
CMSA EVENTS
April 12, 2022 9:30 amThere is a close connection between the scattering amplitudes in planar N=4 SYM theory and the cells in the positive Grassmannian. In the context of BCFW recursion relations the tree-level...
Read more
SEMINARS, HARVARD-MIT ALGEBRAIC GEOMETRY
April 12, 2022 3:00 pmThe extrinsic geometry of the canonical model of a nonhyperelliptic curve captures many aspects of the intrinsic geometry of the curve. In this talk I will discuss joint work with...
Read more
Gauge Theory and Topology Seminar, SEMINARS
April 8, 2022 3:30 pmIn this talk I will discuss work in progress in which we classify topological 4-manifolds with boundary and fundamental group Z, under some mild assumptions on the boundary. We apply...
Read more
SEMINARS, CMSA EVENTS
April 7, 2022 9:30 amExactly solvable spin models such as toric codes and X-cube model have heightened our understanding of spin liquids and topological matter in two and three dimensions. Their exact solvability, it...
Read more
MATHEMATICAL PICTURE LANGUAGE, SEMINARS
April 7, 2022 9:30 amIt follows rather directly from Gödel that mathematical progress per mathematician should diminish with time. The real problem is what relation there is between human mathematics and the set of consequences...
Read more
SEMINARS, CMSA EVENTS
April 7, 2022 9:00 amBott periodicity relates vector bundles on a topological space X to vector bundles on X "times a sphere". I’m not a topologist, so I will try to explain an algebraic...
Read more