On closed 4-manifolds admitting a Morse function with 4 critical points
On for dimensional s-cobordisms, II.
On low dimensional S-cobordisms.
On manifolds diffeomorphic on the complement of a point
We prove that four manifolds diffeomorphic on the complement of a point have the same Donaldson invariants.
On manifolds homeomorphic to ...P2#8... .
On quotients of complex surfaces under complex conjugation.
On Seiberg-Witten equationsοn symplectic 4-manifolds
We discuss Taubes' idea to perturb the monopole equations on symplectic manifolds to compute the Seiberg-Witten invariants in the light of Witten's symmetry trick in the Kähler case.
On self-dual pseudo-connections on some orbifolds.
On signatures and a subgroup of a central extension to the mapping class group.
On sums of algebraic surfaces.
On the (-1)-curve conjecture of Friedmann and Morgan.
On the Classification of Topological 4-Manifolds with Finite Fundamental Group.
On the differentiable structure of certain algebraic surfaces
On the Donaldson polynomials of elliptic surfaces.
On the genus of RP3 x S1.
On the intersection forms of closed 4-manifolds.
Given a closed 4-manifold M, let M* be the simply-connected 4-manifold obtained from M by killing the fundamental group. We study the relation between the intersection forms λM and λM*. Finally some topological consequences and examples are described.
On the intersection forms of spin 4-manifolds bounded by spherical 3-manifolds.
On the number of components of the symplectic representatives of the canonical class
We show that there exists a family of simply connected, symplectic 4-manifolds such that the (Poincaré dual of the) canonical class admits both connected and disconnected symplectic representatives. This answers a question raised by Fintushel and Stern.
On the signatur of four-manifolds with universal covering spin.
On the Symmetries of the Fake C P2.