##### Indefinite Stein fillings and Pin(2)-monopole Floer homology
Given a spin$^c$ rational homology sphere $(Y,\mathfrak{s})$ with $\mathfrak{s}$ self-conjugate and for which the reduced monopole Floer homology $\mathit{HM}_{\bullet}(Y,\mathfrak{s})$ has rank one, we provide obstructions to the intersection forms of its Stein fillings which are not negative definite. The proof of this result (and of its natural generalizations we discuss) uses $\mathrm{Pin}(2)$-monopole Floer homology.
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MasakiTaniguch4: RT @mathGTb: Francesco Lin : Indefinite Stein fillings and Pin(2)-monopole Floer homology https://t.co/OeVNs823w9 https://t.co/djkFsCByjj
4_manifold: RT @mathGTb: Francesco Lin : Indefinite Stein fillings and Pin(2)-monopole Floer homology https://t.co/OeVNs823w9 https://t.co/djkFsCByjj
mathGTb: Francesco Lin : Indefinite Stein fillings and Pin(2)-monopole Floer homology https://t.co/OeVNs823w9 https://t.co/djkFsCByjj