A Morse-Bott Approach to Monopole Floer Homology and the Triangulation Conjecture

In the present work we generalize the construction of monopole Floer homology due to Kronheimer and Mrowka to the case of a gradient flow with Morse-Bott singularities. Focusing then on the special case of a three-manifold equipped equipped with a spin c ^c structure which is isomorphic to its conjugate, we define the counterpart in this context of Manolescu’s recent P i n ( 2 ) Pin(2) -equivariant Seiberg-Witten-Floer homology. In particular, we provide an alternative approach to his disproof of the celebrated Triangulation conjecture.