activity
20012026
most citedManifolds with non-stable fundamental groups, at infinity

23 citations · 84 across the 23 of their papers we have counts for

collaborators

26 papers

math.HO2026

Robert J. Daverman (1941-2026)

Gerard Venema, Craig Guilbault

The is an expanded version of a memorial article that is to appear in the Notices of the American Mathematical Society.

math.GT2023

A generalized theory of expansions and collapses with applications to Z-compactification

Craig R. Guilbault, Daniel Gulbrandsen

We generalize the dual notions of "expansion" and "collapse" so they can be applied to arbitrary metric spaces. We also expand the theory to allow for infinitely many such moves. T…

math.GT2021

Group boundaries for semidirect products with Z

Craig R. Guilbault, Brendan Burns Healy, Brian Pietsch

Bestvina's notion of a Z-structure provides a general framework for group boundaries that includes Gromov boundaries of hyperbolic groups and visual boundaries of CAT(0) groups as…

math.GT2020

Coarse -Boundaries for Groups

Craig R. Guilbault, Molly A. Moran

We generalize Bestvina's notion of a -boundary for a group to that of a "coarse -boundary." We show that established theorems about -boundari…

math.GT2020

Compressible Spaces and -Structures

Craig Guilbault, Molly Moran, Kevin Schreve

Bestvina introduced a -structure for a group to generalize the boundary of a CAT(0) or hyperbolic group. A refinement of this notion, introduced by Farrell and Laf…

math.AT2020

Extreme Nonuniqueness of End-Sum

Jack S. Calcut, Craig R. Guilbault, Patrick V. Haggerty

We give explicit examples of pairs of one-ended, open 4-manifolds whose end-sums yield uncountably many manifolds with distinct proper homotopy types. This answers strongly in the…