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If A is a set, then the absolute complement of A (or simply the complement of A) is the set of elements not in A (within a larger set that is implicitly defined). In other words, let U be a set that contains all the elements under study; if there is no need to mention U, either because it has been previously specified, or it is obvious and unique, then the absolute complement of A is the ...
A set of polygons in an Euler diagram This set equals the one depicted above since both have the very same elements.. In mathematics, a set is a collection of different [1] things; [2] [3] [4] these things are called elements or members of the set and are typically mathematical objects of any kind: numbers, symbols, points in space, lines, other geometrical shapes, variables, or even other ...
Synonym of equinumerous equivalence class A subset within a set, defined by an equivalence relation, where every element in the subset is equivalent to each other under that relation. Erdos Erdős 1. Paul Erdős 2. An Erdős cardinal is a large cardinal satisfying a certain partition condition. (They are also called partition cardinals.) 3.
WordNet is a lexical database of semantic relations between words that links words into semantic relations including synonyms, hyponyms, and meronyms. The synonyms are grouped into synsets with short definitions and usage examples. It can thus be seen as a combination and extension of a dictionary and thesaurus.
A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms, sometimes simply as lists of synonyms and antonyms.
Set theory is the branch of mathematical logic that studies sets, which can be informally described as collections of objects.Although objects of any kind can be collected into a set, set theory – as a branch of mathematics – is mostly concerned with those that are relevant to mathematics as a whole.
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a set of parts to be assembled, e.g. into a scale model: a group of person or objects ("the whole kit and (ca) boodle/billing") kitty affectionate term for a housecat. collective source of funds (esp. for a group of people) piggy bank vagina (vulgar slang) ("Singin' 'hey diddle diddle' with your kitty in the middle" – Aerosmith, Walk this Way)