34 citations · 263 across the 42 of their papers we have counts for
4 papers · 2 filters
Immersions of punctured 4-manifolds: with applications to Quantum Cellular Automata
Michael Freedman, Daniel Kasprowski, Matthias Kreck +2
Motivated by applications to pulling back quantum cellular automata from one manifold to another, we study the existence of immersions between certain smooth 4-manifolds. We show t…
Gluck twists on concordant or homotopic spheres
Daniel Kasprowski, Mark Powell, Arunima Ray
Let be a compact -manifold and let and be embedded -spheres in , both with trivial normal bundle. We write and for the -manifolds obtained by th…
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…
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…