Characterizing hyperbolic spaces and real trees

Characterizing the Cantor bi-cube in asymptotic categories

Characterizing the universal rigidity of generic frameworks

Chebyshev constants for the unit circle

Chebyshev systems and zeros of a function on a convex curve

Cheeger constants, growth and spectrum of locally tessellating planar graphs

Chiral polyhedra in ordinary space, II

Chromogeometry

Chromogeometry and relativistic conics

Circles and Clifford Algebras

Circles and Quadratic Maps Between Spheres

Circumscribing constant-width bodies with polytopes

Classification of Finite Subspaces of Metric Space Instead of Constraints on Metrics

Classification of Six-Point Metrics

Classification of Sol lattices

Close-to-convexity of quasihyperbolic and $j$-metric balls

Clusters of Cycles

Coarse categories I: foundations

Coarse differentiation and multi-flows in planar graphs

Coarse differentiation and quasi-isometries of a class of solvable Lie groups I