Congruent numbers, elliptic curves, and the passage from the local to the global
Consecutive, Reversed, Mirror, and Symmetric Smarandache Sequences of Triangular Numbers
Constructing the Primitive Roots of Prime Powers
Counterexamples in Cake-Cutting
Counting irreducible polynomials over finite fields using the inclusion-exclusion principle
Course of analytical geometry
Course of differential geometry
Course of linear algebra and multidimensional geometry
Criterion for linear independence of functions