Nobuo Iida

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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.GT2020

Seiberg-Witten Floer homotopy contact invariant

Nobuo Iida, Masaki Taniguchi

We introduce a Floer homotopy version of the contact invariant introduced by Kronheimer-Mrowka-Ozváth-Szabó. Moreover, we prove a gluing formula relating our invariant with the fir…

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

Seiberg-Witten Floer homotopy contact invariant

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