${\mathrm{Pin}}^{-}(2)$-monopole invariants

Nobuhiro Nakamura

We introduce a diffeomorphism invariant of $4$-manifolds, the ${\mathrm{Pin}}^{-}(2)$-monopole invariant, defined by using the ${\mathrm{Pin}}^{-}(2)$-monopole equations. We compute the in…