The spectral sequence of an equivariant chain complex and homology with local coefficients
The stable braid group and the determinant of the Burau representation
The stable cohomology of automorphisms of free groups with coefficients in the homology representation
The stable free rank of symmetry of products of spheres
The stable moduli space of flat connections over a surface
The stable moduli space of Riemann surfaces: Mumford's conjecture
The Stable Symplectic Category and Geometric Quantization
The Stasheff model of a simply-connected manifold and the string bracket
The Steenrod problem of realizing polynomial cohomology rings
The String bordism of $BE_8$ and $BE_8\times BE_8$ through dimension 14
The string topology BV algebra, Hochschild cohomology and the Goldman bracket on surfaces
The String Topology Loop Coproduct and Cohomology Operations
The structure of 2D semi-simple field theories
The structure of the Bousfield lattice
The structure set of an arbitrary space, the algebraic surgery exact sequence and the total surgery obstruction
The suspended free loop space of a symmetric space
The symmetric action on secondary homotopy groups
The Symmetric Join Operad
The symmetric signature of a Witt space
The symplectic Verlinde algebras and string K-theory