65 citations · 177 across the 24 of their papers we have counts for
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math.GT2016★ 1 cited
Nonexistence of twists and surgeries generating exotic 4-manifolds
Kouichi Yasui
It is well known that for any exotic pair of simply connected closed oriented 4-manifolds, one is obtained from the other by twisting a compact contractible submanifold via an invo…
math.GT2016★ 2 cited
Contact 5-manifolds and smooth structures on Stein 4-manifolds
Kouichi Yasui
We show that, under a certain condition, contact 5-manifolds can `coarsely' distinguish smooth structures on compact Stein 4-manifolds via contact open books. We also give a simple…