BROWSE ALPHABETICALLY LEVEL:    Elementary    Advanced    Both INCLUDE TOPICS:    Basic Math    Algebra    Analysis    Biography    Calculus    Comp Sci    Discrete    Economics    Foundations    Geometry    Graph Thry    History    Number Thry    Phys Sci    Statistics    Topology    Trigonometry Zermelo Fraenkel set theory – ZFC Zermelo Fraenkel set theory   The standard set theory in which most mathematics is formalized. Its axioms include the pairing axiom, the power set axiom, the axiom of infinity, the axiom of extensionality, the axiom of replacement, the separation axiom, the union axiom, and the foundation axiom. Abbreviated ZF. When the axiom of choice is assumed, this theory is abbreviated ZFC. zero ring   The ring with only one element, its additive identity. zeta function   The function z(s) given by:This function gives series representations of many significant numbers, e.g., z(2) = p2/6, and z(4) = p4/90.Cf. Riemann Hypothesis. ZF   ZFC Zermelo Fraenkel set theory – ZFC
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