EntityQ217594· pop 33· linked from 553 articlesclassSign in to savemathematical collection of sets that can be defined based on a property of its members (set theory)ConnectionscategoryEntitysemantic theory of truthEntitymathematical logicEntityordinal numberEntityfirst-order logicEntityformal systemEntityZermelo–Fraenkel set theoryEntityrecursive setEntityVon Neumann–Bernays–Gödel set theoryEntitysemantics of logicEntityvon Neumann universeEntitystructureEntityground expressionEntitydiagramEntitymathematicsEntitylogicEntityBertrand RussellEntityInternational Standard Book NumberEntityset theoryEntityfunctionEntityCategoriesSet theory