P. Orson

activity

20132026

most citedA survey of the foundations of four-manifold theory in the topological category

56 citations · 112 across the 21 of their papers we have counts for

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Showing 2023 · math.GTShow all

2 papers · 2 filters

math.GT2023

Locally flat simple spheres in $C P^{2}$

Anthony Conway, Patrick Orson

The fundamental group of the complement of a locally flat surface in a $4$ -manifold is called the knot group of the surface. In this article we prove that two locally flat $2$ -sphe…

math.GT2023★ 1 cited

Unknotting nonorientable surfaces

Anthony Conway, Patrick Orson, Mark Powell

Given a nonorientable, locally flatly embedded surface in the $4$ -sphere of nonorientable genus $h$ , Massey showed that the normal Euler number lies in $\lbrace -2h,-2h+4,\ldots,2h…

Locally flat simple spheres in CP2

Unknotting nonorientable surfaces

Locally flat simple spheres in $C P^{2}$