activity
20042026
most citedForbidden Families of Configurations

3 citations · 6 across the 9 of their papers we have counts for

collaborators

11 papers

math.CO2026

Exact Bounds for Forbidden Configurations and the Extremal Matrices

Richard P. Anstee, Oakley Edens, Arvin Sahami +2

Let be a (0,1)-matrix. A matrix is simple if it is a (0,1)-matrix with no repeated columns. A (0,1)-matrix is said to have a as a configuration if there…

math.CO2025

Forbidden Configurations and Boundary Cases

Richard P. Anstee, Oakley Edens, Arvin Sahami +1

Let be a (0,1)-matrix. Define a (0,1)-matrix to have a as a \emph{configuration} if there is a submatrix of which is a row and column permutation of…

math.CO2024

Stability Theorems for Forbidden Configurations

Richard P. Anstee, Benjamin Kreiswirth, Bowen Li +2

Stability is a well investigated concept in extremal combinatorics. The main idea is that if some object is close in size to an extremal object, then it retains the structure of th…

math.CO2019

Design Theory and some Forbidden Configurations

R. P. Anstee, Farzin Barekat, Zachary Pellegrin

In this paper we relate t-designs to a forbidden configuration problem in extremal set theory. Let 1_t 0_l denote a column of t 1's on top of l 0's. We assume t>l. Let q. (1_t 0_l)…

math.CO2019★ 1 cited

Design Theory and Some Non-simple Forbidden Configurations

R. P. Anstee, Farzin Barekat

Let 1_k 0_l denote the (k+l)\times 1 column of k 1's above l 0's. Let q. (1_k 0_l) $ denote the (k+l)xq matrix with q copies of the column 1_k0_l. A 2-design S_λ(2,3,v) can be defi…

math.CO2017

Multivalued matrices and forbidden configurations

Richard Anstee, Jeffrey Dawson, Linyuan Lu +1

An -matrix is a matrix with symbols in . A matrix is simple if it has no repeated columns. Let be a finite set of -matrices. Let $\hbox{forb}(m…