Arunima Ray

activity

20122026

most citedNull, recursively starlike-equivalent decompositions shrink

33 citations · 203 across the 22 of their papers we have counts for

collaborators

Showing 2022 · math.GTShow all

3 papers · 2 filters

math.GT2022★ 2 cited

Gluck twists on concordant or homotopic spheres

Daniel Kasprowski, Mark Powell, Arunima Ray

Let $M$ be a compact $4$ -manifold and let $S$ and $T$ be embedded $2$ -spheres in $M$ , both with trivial normal bundle. We write $M_{S}$ and $M_{T}$ for the $4$ -manifolds obtained by th…

math.GT2022★ 9 cited

Counterexamples in 4-manifold topology

Daniel Kasprowski, Mark Powell, Arunima Ray

We illustrate the rich landscape of 4-manifold topology through the lens of counterexamples. We consider several of the most commonly studied equivalence relations on 4-manifolds a…

math.GT2022★ 8 cited

Embedding surfaces in 4-manifolds

Daniel Kasprowski, Mark Powell, Arunima Ray +1

We prove a surface embedding theorem for 4-manifolds with good fundamental group in the presence of dual spheres, with no restriction on the normal bundles. The new obstruction is…