Free Semigroup

A Semigroup with a noncommutative product in which no Product can ever be expressed more simply in terms ofother Elements.

• Subordinate Norm
• Subscript
• Subsequence
• Subset
• Subspace
• Substitution Group
• Substitution Map
• Subtend
• Subtraction
• Succeeds
• Successes
• Sufficient
• Suitable Number
• Sum
• Summand
• Summatory Function
• Sum-Product Number
• Sum Rule
• Sup
• Characteristic (Partial Differential Equation)
• Characteristic Polynomial
• Characteristic (Real Number)
• Character (Multiplicative)
• Character (Number Theory)
• Character Table