Analysis Seminar
Wenbo Sun, Virginia Tech
Geometry Ramsey Conjecture over finite fields
4:00PM, 250 Math Building
Geometry and Topology Seminar
Matthew Stoffregen (Michigan State University)
Pin(2) Floer homology and the Rokhlin invariant
4:00PM, 122 Mathematics Building
Algebra Seminar
Janusz Wysoczański, University of Wroclaw
Hecke algebras on homogeneous trees and relationswith Hankel and Toeplitz matrices
4:00PM, 250 Mathematics Building
The Hecke algebra on homogeneous tree is a commutative algebra, spanned by particular kernels, defined on pairs of vertices \((x,y)\)and indexed by non-negative integers \(f_n(x,y)\). Each of these kernels depends on the distance between the vertices and vanishes if the distance is not equal to their index, otherwise it equals 1. We will show that the Hecke algebra is generated by \(f_1\), which satisfies quadratic (Hecke) equation. Our main interest is in showing that the Hecke algebra is MASA (i.e. Maximal Abelian SubAlgebra) in some bigger algebra.
If \(q>1\) then a geometric trick of a Y-turn on the tree will do the job. If \(q=1\), which corresponds to the tree of integers, the Y-turn is not possible, and we introduce some additional (Banach space)structure and show that the Hecke algebra is not MASA, but its commutant decomposes as a direct sum of Hankel and Toeplitz (double-infinite) matrices.
Analysis Seminar
Jakob Streipel, University of Maine
4:00PM, 250 Math Building
Applied Math Seminar
Mohammad-Ali Miri, Queens College CUNY
TBA.
3:00PM, Math 250
Analysis Seminar
Jingbo Xia, SUNY at Buffalo
The Helton-Howe trace formula for the Drury-Arveson space
4:00PM, 250 Math Building
Applied Math Seminar
Jia Zhao, Binghamton University
TBA.
3:00PM, Math 250
Analysis Seminar
Raphael Ponge, Sichuan University
4:00PM, 250 Math Building
Applied Math Seminar
Deniz Bilman, University of Cincinnati
TBA.
3:00PM, Math 250
Analysis Seminar
Joseph Leung, Rutgers University
4:00PM, 250 Math Building
Applied Math Seminar
Katerina Gkogkou, Tulane University
TBA.
3:00PM, Math 250
Analysis Seminar
Wenbo Sun, Virginia Tech
Geometry Ramsey Conjecture over finite fields
4:00PM, 250 Math Building
Geometry and Topology Seminar
Matthew Stoffregen (Michigan State University)
Pin(2) Floer homology and the Rokhlin invariant
4:00PM, 122 Mathematics Building
Algebra Seminar
Janusz Wysoczański, University of Wroclaw
Hecke algebras on homogeneous trees and relationswith Hankel and Toeplitz matrices
4:00PM, 250 Mathematics Building
The Hecke algebra on homogeneous tree is a commutative algebra, spanned by particular kernels, defined on pairs of vertices \((x,y)\)and indexed by non-negative integers \(f_n(x,y)\). Each of these kernels depends on the distance between the vertices and vanishes if the distance is not equal to their index, otherwise it equals 1. We will show that the Hecke algebra is generated by \(f_1\), which satisfies quadratic (Hecke) equation. Our main interest is in showing that the Hecke algebra is MASA (i.e. Maximal Abelian SubAlgebra) in some bigger algebra.
If \(q>1\) then a geometric trick of a Y-turn on the tree will do the job. If \(q=1\), which corresponds to the tree of integers, the Y-turn is not possible, and we introduce some additional (Banach space)structure and show that the Hecke algebra is not MASA, but its commutant decomposes as a direct sum of Hankel and Toeplitz (double-infinite) matrices.
Analysis Seminar
Jakob Streipel, University of Maine
4:00PM, 250 Math Building
Applied Math Seminar
Mohammad-Ali Miri, Queens College CUNY
TBA.
3:00PM, Math 250
Analysis Seminar
Jingbo Xia, SUNY at Buffalo
The Helton-Howe trace formula for the Drury-Arveson space
4:00PM, 250 Math Building
Applied Math Seminar
Jia Zhao, Binghamton University
TBA.
3:00PM, Math 250
Analysis Seminar
Raphael Ponge, Sichuan University
4:00PM, 250 Math Building
Applied Math Seminar
Deniz Bilman, University of Cincinnati
TBA.
3:00PM, Math 250
Analysis Seminar
Joseph Leung, Rutgers University
4:00PM, 250 Math Building
Applied Math Seminar
Katerina Gkogkou, Tulane University
TBA.
3:00PM, Math 250