activity
19982026
most citedSubgroups of free idempotent generated semigroups: full linear monoid

16 citations · 52 across the 19 of their papers we have counts for

collaborators

24 papers

math.GT2026

Unknotting number and connected sums: The knots and

Mark Brittenham, Susan Hermiller

We show that the knots can be paired with a corresponding knot such that . As a consequence unknotting number fails to…

math.GT2025

Unknotting number is not additive under connected sum

Mark Brittenham, Susan Hermiller

We give the first examples of a pair of knots , in the 3-sphere for which their unknotting numbers satisfy . This answers question 1.69(B) fro…

math.GT2021

The smooth 4-genus of (the rest of) the prime knots through 12 crossings

Mark Brittenham, Susan Hermiller

We compute the smooth 4-genera of the prime knots with 12 crossings whose values, as reported on the KnotInfo website, were unknown. This completes the calculation of the smooth 4-…

math.GT2017

A counterexample to the Bernhard-Jablan unknotting conjecture

Mark Brittenham, Susan Hermiller

We show that there is a knot satisfying the property that for each minimal crossing number diagram of the knot and each single crossing of the diagram, changing the crossing result…

math.GR2016★ 4 cited

Geometry of the word problem for 3-manifold groups

Mark Brittenham, Susan Hermiller, Tim Susse

We provide an algorithm to solve the word problem in all fundamental groups of closed 3-manifolds; in particular, we show that these groups are autostackable. This provides a commo…

math.GR2015

Homology and closure properties of autostackable groups

Mark Brittenham, Susan Hermiller, Ashley Johnson

Autostackability for finitely presented groups is a topological property of the Cayley graph combined with formal language theoretic restrictions, that implies solvability of the w…