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Definitions of sigma:
  • noun:   the 18th letter of the Greek alphabet



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Alternative Terms
mathematics set subset closure-mathematics complement-set-theory countable-set union-set-theory boolean-algebra-structure completeness-order-theory field-of-sets measure mathematical-analysis probability-theory power-set empty-set de-morgan-s-laws axiom-of-choice vitali-set image-mathematics category-mathematics measurable-function morphism fraktur-typeface-sub-classification summation subbase borel-algebra topological-space open-set closed-set euclidean-space-2 lebesgue-measure integral complete-measure sample-space separable-sigma-algebra sigma-ring sigma-additivity measurable-set-mathematics measurable-space-mathematics borel-sigma-algebra-mathematics absolutely-continuous-measure baire-set-mathematics complex-measure signed-measure multivariate-random-variable vitali-hahn-saks-theorem hahn-kolmogorov-theorem ba-space algebra-disambiguation