Abel's Functional Equation
Let 
denote the Dilogarithm, defined by
then
See also Dilogarithm, Polylogarithm, Riemann Zeta Function
- Steinitz's Theorem
- Steinmetz Solid
- Stella Octangula
- Stella Octangula Number
- Stellated Polyhedron
- Stellated Tetrahedron
- Stellated Truncated Hexahedron
- Stellation
- Stem-and-Leaf Diagram
- Step
- Step Function
- Step Polynomial
- Steradian
- Stereogram
- Stereographic Projection
- Stereology
- Stern-Brocot Tree
- Stevedore's Knot
- Stewart's Theorem
- Stickelberger Relation
- Stick Number
- Stiefel Manifold
- Stiefel-Whitney Class
- Stiefel-Whitney Number
- Stieltjes Constants