Algebra & Combinatorics Seminars
forthcoming | previous 

Forthcoming Seminars - 2018 to 2019

Wednesday the 27th of February at 1pm in Lecture Theatre D
Ashley Clayton
University of St Andrews
TBA



Wednesday the 27th of February at 1:30pm in Lecture Theatre D
Chris Russell
University of St Andrews
Counting finite congruence free semigroups

A congruence free semigroup has only two congruences - the universal congruence and the trivial congruence. A finite semigroup which is congruence free either be a simple group or a 0-simple semigroup with all subgroups trivial. The latter corresponds to binary matrices with all rows unique and all columns unique via the correspondence with Rees 0-matrix semigroups. I will demonstrate a method to count the isomorphism classes of these semigroups, which corresponds with counting these matrices up to permutations of the rows and columns.



Wednesday the 6th of March at 1pm in Lecture Theatre D
Kamilla Rekvényi
University of St Andrews
TBA



Wednesday the 6th of March at 1:30pm in Lecture Theatre D
Hannah Sheats
University of St Andrews
TBA



Wednesday the 3rd of April at 1:30pm in Lecture Theatre D
Craig Miller
University of St Andrews
TBA



Wednesday the 3rd of April at 1pm in Lecture Theatre D
Gerard O'Reilly
University of St Andrews
TBA



Wednesday the 10th of April at 1pm in Lecture Theatre D
Fernando Flores Brito
University of St Andrews
TBA



Wednesday the 10th of April at 1:30pm in Lecture Theatre D
Saul Freedman
University of St Andrews
TBA



Wednesday the 17th of April at 1pm in Lecture Theatre D
Simon Jurina
University of St Andrews
TBA



Wednesday the 17th of April at 1:30pm in Lecture Theatre D
Finn Smith
University of St Andrews
TBA



Wednesday the 24th of April at 1:00pm in Lecture Theatre D
Siavash Lashkarighouchani
University of St Andrews
TBA



Wednesday the 24th of April at 1:30pm in Lecture Theatre D
Adan Mordcovich
University of St Andrews
TBA



Wednesday the 1st of May at 1:30pm in Lecture Theatre D
Luke Elliott
University of St Andrews
TBA



Wednesday the 1st of May at 1pm in Lecture Theatre D
Veronica Kelsey
University of St Andrews
TBA



Wednesday the 8th of May at 1:30pm in Lecture Theatre D
Raad Al-Kohli
University of St Andrews
TBA



Wednesday the 8th of May at 1pm in Lecture Theatre D
Mohammed Aljohani
University of St Andrews
TBA