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Washington State
University

Combinatorics, Linear Algebra and Number Theory Seminar

Department of Mathematics and Statistics

Meet on Zoom

https://wsu.zoom.us/j/99273222985?pwd=T3ZNR2cxZDZTWndzd2taRTZzNk5QUT09

Meeting ID: 992 7322 2985

Password: M410

March 20, Monday, 4:10 - 5:00 PM

Jessica Dickson

Department of Mathematics and Statistics

Washington State University

Combinatorics, Linear Algebra and Number Theory Seminar

Department of Mathematics and Statistics

Meet on Zoom

https://wsu.zoom.us/j/99273222985?pwd=T3ZNR2cxZDZTWndzd2taRTZzNk5QUT09

Meeting ID: 992 7322 2985

Password: M410

March 20, Monday, 4:10 - 5:00 PM

Jessica Dickson

Department of Mathematics and Statistics

Washington State University

Title: Extended Riordan Arrays with Finite
Overlays

Abstract: This talk focuses on using Templates and Overlays to characterize extended Riordan arrays. Extended Riordan arrays are lower triangular arrays that extend infinitely in all directions, defined by a pair of ordinary generating functions. Operators X and Y are used to shift the array by columns and rows, respectively. A template is a polynomial in X and Y whereas an overlay is an array containing the coefficients of the template. In this presentation we discuss which extended Riordan arrays have finite overlays and the form these take.

Abstract: This talk focuses on using Templates and Overlays to characterize extended Riordan arrays. Extended Riordan arrays are lower triangular arrays that extend infinitely in all directions, defined by a pair of ordinary generating functions. Operators X and Y are used to shift the array by columns and rows, respectively. A template is a polynomial in X and Y whereas an overlay is an array containing the coefficients of the template. In this presentation we discuss which extended Riordan arrays have finite overlays and the form these take.