Characterizing algebraic stacks

Characterizing closed curves on Riemann surfaces via homology groups of coverings

Chen-Ruan Cohomology of cotangent orbifolds and Chas-Sullivan String Topology

Chern approximations for generalised group cohomology

Chern classes and generators

Chern numbers of Chern submanifolds

Chern subrings

Chiral differential operators on supermanifolds

Chow rings and cobordism of some Chevalley groups

Chromatic characteristic classes in ordinary group cohomology

Chromatic numbers, morphism complexes, and Stiefel-Whitney characteristic classes

Chromatic phenomena in the algebra of BP_{*}BP-comodules

Circle action and some vanishing results on manifolds

Circle valued Morse theory and Novikov homology

Circle-equivariant classifying spaces and the rational equivariant sigma genus

Clapp-Puppe Type Lusternik-Schnirelmann (Co)category in a Model Category

Class-combinatorial model categories

Classical invariants for global actions and groupoid atlases

Classification of (Z_p^k)^m orientation preserving actions on surfaces

Classification of Bott manifolds up to dimension eight