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Algebraic Dynamics: The pentagram map

ALGEBRAIC DYNAMICS, SEMINARS

November 3, 2022      4:00 pm
Speaker: Max Weinreich - Havard University

The pentagram map was introduced by Schwartz as a dynamical system on convex polygons in the real projective plane. The map sends a polygon to the shape formed by intersecting...
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Algebraic Dynamics: Polynomials, branched covers, and trees

ALGEBRAIC DYNAMICS, SEMINARS

October 27, 2022      4:00 pm
Speaker: Becca Winarski - College of the Holy Cross

Thurston proved that a post-critically finite branched cover of the plane is either equivalent to a polynomial (that is: conjugate via a mapping class) or it has a topological obstruction. ...
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Algebraic Dynamics: Core entropy of quadratic polynomials

ALGEBRAIC DYNAMICS, SEMINARS

September 15, 2022      4:00 pm
Speaker: Kathryn Lindsey - Boston College

This will be more of a mini-course than a traditional seminar.  I will provide details about the (core) entropy algorithms for quadratic polynomials from my work with Tiozzo and Wu....
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Algebraic Dynamics: Dynamical cancellation

ALGEBRAIC DYNAMICS, SEMINARS

April 14, 2022      4:00 pm
Speaker: Jason Bell - University of Waterloo

Let 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...
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Algebraic Dynamics Seminar: Eigenvalues of the Thurston Operator

ALGEBRAIC DYNAMICS, SEMINARS

March 31, 2022      4:00 pm
Speaker: Rafael Saavedra - Harvard University

I will first explain the significance of Thurston's pushforward operator for studying postcritically finite rational maps. I will then present some results due to Buff-Epstein-Koch which relate the eigenvalues of...
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Polynomials with many rational preperiodic points

ALGEBRAIC DYNAMICS, SEMINARS

February 10, 2022      4:00 pm
Speaker: Trevor Hyde - University of Chicago

How many rational preperiodic points can a degree d polynomial in Q[x] have? Conjecturally, there is some uniform bound B_d(Q) on the number of such preperiodic points -- but how...
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Master Teapots and Entropy Algorithms for the Mandelbrot set

ALGEBRAIC DYNAMICS, SEMINARS

January 27, 2022      4:00 pm
Speaker: Kathryn Lindsey - Boston College

The core entropy of a postcritically finite quadratic polynomial is the topological entropy of its restriction to its Hubbard tree.  Core entropy is also the logarithm of the largest eigenvalue...
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