James East

activity

20072026

most citedMotzkin monoids and partial Brauer monoids

31 citations · 211 across the 34 of their papers we have counts for

collaborators

Showing 2018Show all

3 papers · 1 filter

math.CO2018

Lattice paths and submonoids of $Z^{2}$

James East, Nicholas Ham

We study a number of combinatorial and algebraic structures arising from walks on the two-dimensional integer lattice. To a given step set $X \subseteq Z^{2}$ , there are two na…

math.GR2018★ 1 cited

Congruences on infinite partition and partial Brauer monoids

James East, Nik Ruskuc

We give a complete description of the congruences on the partition monoid $P_{X}$ and the partial Brauer monoid $P B_{X}$ , where $X$ is an arbitrary infinite set, and also of the lattic…

math.GR2018

Transformation representations of sandwich semigroups

James East

Let $a$ be an element of a semigroup $S$ . The local subsemigroup of $S$ with respect to $a$ is the subsemigroup $a S a$ of $S$ . The variant of $S$ with respect to $a$ is the semigrou…

Lattice paths and submonoids of Z2

Congruences on infinite partition and partial Brauer monoids

Transformation representations of sandwich semigroups

Lattice paths and submonoids of $Z^{2}$