electromagnetic potentials
where c is the speed of light. A and φ are not uniquely determined by these expressions, and they are normally chosen to satisfy the extra condition 
.
- catenary
- catenoid
- Cauchy, Augustin-Louis
- Cauchy convergence criterion
- Cauchy distribution
- Cauchy-Frobenius lemma
- Cauchy integral test
- Cauchy sequence
- Cauchy's formula for derivatives
- Cauchy's integral formula
- Cauchy's Integral Theorem
- Cauchy's mean value theorem
- Cauchy's Residue Theorem
- Cauchy's test
- Cauchy's Theorem
- Cauchy's Theorem
- Cauchy–Riemann equations
- Cauchy–Schwarz inequality
- Cauchy–Schwarz inequality for integrals
- Cauchy–Schwarz inequality for sums
- causation
- Cavalieri, Bonaventura
- Cayley, Arthur
- Cayley Representation Theorem
- Cayley's Theorem