，（区）域 ，整环- Sylvester ring
- Sylvester sequence
- Sylvester signature
- Sylvester theorem
- Sylvester triangle problem
- Symanzik, K.
- symbol
- symbol algebra
- symbol computation
- symbolic adjunction
- symbolic algebra
- symbolically expressed invariant
- symbolic calculus
- symbolic code
- symbolic coding
- symbolic computation
- symbolic dynamics
- symbolic formula
- symbolic integration
- symbolic language
- symbolic logic
- symbolic method
- symbolic method of integration
- symbolic model
- symbolic notation