Covering systems and generating functions
Covering the integers by arithmetic sequences
Crible d'eratosthène et étoiles isolées
Cribrum algebraicum oder die cofunctionale Entstehung der Primzahlen.
Criteria for testing Wall's question
In this paper we find certain equivalent formulations of Wall's question and derive two interesting criteria that can be used to resolve this question for particular primes.
Criterion for 2 to be an lth power
Criterion for 3 to be eleventh power
Curiosité mathématique
Curvature flows of maximal integral triangulations
This paper describes local configurations of some planar triangulations. A Gauss-Bonnet-like formula holds locally for a kind of discrete “curvature” associated to such triangulations.
Curves of genus 2, continued fractions, and Somos sequences.