Difference
The difference of two numbers 
and 
is 
, where the Minus sign denotes Subtraction.
- Symmetroid
- Symmetry
- Symmetry Group
- Symmetry Operation
- Symmetry Principle
- Symplectic Diffeomorphism
- Symplectic Form
- Symplectic Group
- Symplectic Manifold
- Symplectic Map
- Symplectomorphism
- Synclastic
- Synergetics
- Synthesized Beam
- Syntonic Comma
- Syracuse Algorithm
- Syracuse Problem
- System of Differential Equations
- System of Equations
- Syzygies Problem
- Syzygy
- Szilassi Polyhedron
- Szpiro's Conjecture
- Sárközy's Theorem
- T2-Separation Axiom