Special rank two vector bundles over Enriques surfaces.
Specialization of Segre classes of singular algebraic varieties.
Specialization to the tangent cone and Whitney equisingularity
Let be a reduced, equidimensional germ of an analytic singularity with reduced tangent cone . We prove that the absence of exceptional cones is a necessary and sufficient condition for the smooth part of the specialization to the tangent cone to satisfy Whitney’s conditions along the parameter axis . This result is a first step in generalizing to higher dimensions Lê and Teissier’s result for hypersurfaces of which establishes the Whitney equisingularity of and its tangent cone under...
Spectral curves and integrable systems
Spectral Pairs, Mixed Hodge Modules, and Series of Plane Curve Singularities.
Stabilité du fibré tangent des surfaces de Del Pezzo.
Stability of Irrational Ruled Threefolds.
Stability of tautological vector bundles on Hilbert squares of surfaces
Stability of the tangent bundle and existence of a Kähler-Einstein metric.
Stability of Two-Dimensional Local Rings. I.
Stabilizers for nondegenerate matrices of boundary format and Steiner bundles.
In this paper nondegenerate multidimensional matrices of boundary format in V0 ⊗ ... ⊗ Vp are investigated by their link with Steiner vector bundles on product of projective spaces. For any nondegenerate matrix A the stabilizer for the SL(V0) x ... x SL(Vp)-action, Stab(A), is completely described. In particular we prove that there exists an explicit action of SL(2) on V0 ⊗ ... ⊗ Vp such that Stab(A)0 ⊆ SL(2) and the equality holds if and only if A belongs to a unique SL(V0) x ... x SL(Vp)-orbit...
Stable 2-Bundles on Hirzebruch Surfaces.
Stable bundles on blown up surfaces.
Stable bundles on regular elliptic surfaces.
Stable bundles with torsion chern classes on non-Kählerian elliptic surfaces.
Stable Rank-2 Vector Bundles on: IP2with cl Odd.
Stahle bundles and differentiable structures on certain elliptic surfaces.
Status report on the instanton counting.
Strichartz and smoothing estimates for Schrödinger operators with large magnetic potentials in
We present a novel approach for bounding the resolvent of for large energies. It is shown here that there exist a large integer and a large number so that relative to the usual weighted -norm, for all . This requires suitable decay and smoothness conditions on . The estimate (2) is trivial when , but difficult for large since the gradient term exactly cancels the natural decay of the free resolvent. To obtain (2), we introduce a conical decomposition of the resolvent and then sum over...
Strictly nef divisors and Fano threefolds.