- descriptive set theory
- Математика: дескриптивная теория множеств
Универсальный англо-русский словарь. Академик.ру. 2011.
descriptive set theory
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Descriptive set theory — In mathematical logic, descriptive set theory is the study of certain classes of well behaved subsets of the real line and other Polish spaces. As well as being one of the primary areas of research in set theory, it has applications to other… … Wikipedia
Effective descriptive set theory — is the branch of descriptive set theory dealing with sets of reals having lightface definitions; that is, definitions that do not require an arbitrary real parameter. Thus effective descriptive set theory combines descriptive set theory with… … Wikipedia
Tree (descriptive set theory) — In descriptive set theory, a tree on a set X is a set of finite sequences of elements of X that is closed under subsequences. More formally, it is a subset T of X^{ … Wikipedia
Set theory — This article is about the branch of mathematics. For musical set theory, see Set theory (music). A Venn diagram illustrating the intersection of two sets. Set theory is the branch of mathematics that studies sets, which are collections of objects … Wikipedia
Tree (set theory) — In set theory, a tree is a partially ordered set (poset) ( T … Wikipedia
Descriptive complexity theory — For other uses, see Kolmogorov complexity. Descriptive complexity is a branch of computational complexity theory and of finite model theory that characterizes complexity classes by the type of logic needed to express the languages in them. For… … Wikipedia
List of set theory topics — Logic portal Set theory portal … Wikipedia
Baire space (set theory) — In mathematics field of set theory, especially descriptive set theory, the Baire space is the set of all infinite sequences of natural numbers with a certain topology. This space is commonly used in descriptive set theory, to the extent that its… … Wikipedia
Cabal (set theory) — The Cabal was, or perhaps is, a grouping of set theorists in Southern California, particularly at UCLA and Caltech, perhaps also at UC Irvine. Organization and procedures range from informal to nonexistent, so it is difficult to say whether it… … Wikipedia
Set of uniqueness — M set redirects here. For the CityRail train, see CityRail M set. In mathematics, a set of uniqueness is a concept relevant to trigonometric expansions which are not necessarily Fourier series. Their study is a relatively pure branch of harmonic… … Wikipedia
Theory — The word theory has many distinct meanings in different fields of knowledge, depending on their methodologies and the context of discussion.In science a theory is a testable model of the manner of interaction of a set of natural phenomena,… … Wikipedia
