- cylindrical algebraic decomposition
- cylindrical coordinates
- cylindrical function
- cylindrical helix
- cylindrical section
- cylindrical surface
- cylindrical surface
- cylindroid
- cylindroid linear congruence
- Cˇech cohomology
- Cˇech cohomology groups
- Cˇech complete space
- Cˇech homology groups
- Cˇech-Lebesgue dimension
- C∞ contact equivalence
- C∞-curve
- C∞ ringt-left equivalence
- C∞ stability
- C∞右-左等价
- C∞接触等价
- C∞稳定性
- C∞阶曲线
- C*代数
- C*代数上正线性映射
- C*代数中的正元