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math.GT2024
Smooth structures on four-manifolds with finite cyclic fundamental groups
R. Inanc Baykur, Andras I. Stipsicz, Zoltan Szabo
For each nonnegative integer m we show that any closed, oriented topological four-manifold with fundamental group Z_{4m+2} and odd intersection form, with possibly seven exceptions…
math.GT2024
On four-manifolds without 1- and 3-handles
R. Inanc Baykur
We note that infinitely many irreducible, closed, simply connected 4-manifolds, with prescribed signature and spin type, admit perfect Morse functions, i.e. they can be given handl…
math.GT2024
Stein fillings vs. Milnor fibers
R. Inanc Baykur, A. Nemethi, O. Plamenevskaya
Given a link of a normal surface singularity with its canonical contact structure, we compare the collection of its Stein fillings to its Milnor fillings (that is, Milnor fibers of…