Colloquia: Difference between revisions

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-<b>UW Madison mathematics Colloquium is ONLINE on Fridays at 4:00 pm. </b>
+<b>UW-Madison Mathematics Colloquium is on Fridays at 4:00 pm in Van Vleck B239 unless otherwise noted.</b>
-<!--- in Van Vleck B239, '''unless otherwise indicated'''. --->
+Contacts for the colloquium are Michael Kemeny (spring) and Dallas Albritton (fall).
-=Fall 2020=
+Everyone in the math department is subscribed to the mathcolloquium@g-groups.wisc.edu mailing list.
-== September 25, 2020, [https://www.math.tamu.edu/~jml/  Joseph Landsberg] (Texas A&M) ==
-(Hosted by Gurevitch)
+This semester's colloquia: [[Colloquia/Spring 2025|Spring 2025]]
+==Future Colloquia==
+==Past Colloquia ==
-'''From theoretic computer science to algebraic geometry: how the complexity of matrix multiplication led me to the Hilbert scheme of points.'''
+[[Colloquia/Fall 2024|Fall 2024]]
-In 1968 Strassen discovered the way we multiply nxn matrices
+[[Colloquia/Spring2024|Spring 2024]]
-(row/column)
-is not the most efficient algorithm possible. Subsequent work has led to
-the astounding conjecture that as the size n of the matrices grows, it
-becomes
-almost as easy to multiply matrices as it is to add them. I will give a
-history
-of this problem and explain why it is natural to study it using
-algebraic geometry
-and representation theory. I will conclude by discussing recent exciting
-developments
-that explain the second phrase in the title.
-== October 9, 2020, [https://impa.br/en_US/page-pessoas/carolina-araujo/ Carolina Araujo] (IMPA)  ==
+[[Colloquia/Fall 2023|Fall 2023]]
-(Hosted by Ellenberg)
+[[Colloquia/Spring2023|Spring 2023]]
-'''Symmetries in Algebraic Geometry and Cremona transformations'''
+[[Colloquia/Fall2022|Fall 2022]]
-In this talk I will discuss symmetries of complex algebraic varieties. When studying a projective variety $X$, one usually wants to understand its symmetries. Conversely, the structure of the group of automorphisms of $X$ encodes relevant geometric properties of $X$. After describing some examples of automorphism groups of projective varieties, I will discuss why the notion of automorphism is too rigid in the scope of birational geometry. We are then led to consider another class of symmetries of $X$, its birational self-maps. Birational self-maps of the projective space $\mathbb{P}^n$ are called Cremona transformations. Describing the structure of the group of Cremona transformations of the plane is a classical problem that goes back to the 19th century. In higher dimensions, not so much is known, and a natural problem is to construct interesting subgroups of the Cremona group. I will end by discussing a recent work with Alessio Corti and Alex Massarenti, where we investigate subgroups of the Cremona group consisting of symmetries preserving some special meromorphic volume forms.
+[[Spring 2022 Colloquiums|Spring 2022]]
-== October 23, 2020, [http://www.math.toronto.edu/quastel/ Jeremy Quastel] (University of Toronto) ==
+[[Colloquia/Fall2021|Fall 2021]]
-(Hosted by Gorin)
+[[Colloquia/Spring2021|Spring 2021]]
-== November 6, 2020, [http://math.jhu.edu/~sakellar/ Yiannis Sakellaridis] (Johns Hopkins University)==
+[[Colloquia/Fall2020|Fall 2020]]
-(Hosted by Gurevitch)
-== November 20, 2020, [https://web.ma.utexas.edu/users/ntran/ Reserved]  ==
-(Hosted by Rodriguez)
-== December 4, 2020, [http://math.sfsu.edu/federico/ Federico Ardila] (San Francisco)  ==
-(Hosted by Ellenberg)
-== Past Colloquia ==
 [[Colloquia/Spring2020|Spring 2020]]

Colloquia: Difference between revisions

Latest revision as of 06:22, 17 December 2024

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