Kouki Sato

collaborators

2 papers

math.GT2025

On the slice-torus invariant $q_{M}$ from $Z_{2}$ -equivariant Seiberg--Witten Floer cohomology

Nobuo Iida, Taketo Sano, Kouki Sato +1

We show that Iida--Taniguchi's $Z$ -valued slice-torus invariant $q_{M}$ cannot be realized as a linear combination of Rasmussen's $s$ -invariant, Ozsváth--Szabó's $τ$ -invaria…

math.GT2024

An unoriented analogue of slice-torus invariant

Kouki Sato

A slice-torus invariant is an $R$ -valued homomorphism on the knot concordance group whose value gives a lower bound for the 4-genus such that the equality holds for any po…

On the slice-torus invariant qM​ from Z2​-equivariant Seiberg--Witten Floer cohomology

An unoriented analogue of slice-torus invariant

On the slice-torus invariant $q_{M}$ from $Z_{2}$ -equivariant Seiberg--Witten Floer cohomology