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  2. Morse–Kelley set theory - Wikipedia

    en.wikipedia.org/wiki/Morse–Kelley_set_theory

    Mendelson, Elliott (1987). Introduction to Mathematical Logic. Chapman & Hall. ISBN 0-534-06624-0. The definitive treatment of the closely related set theory NBG, followed by a page on MK. Harder than Monk or Rubin. Monk, J. Donald (1980) Introduction to Set Theory. Krieger. Easier and less thorough than Rubin. Morse, A. P., (1965) A Theory of ...

  3. Elliott Mendelson - Wikipedia

    en.wikipedia.org/wiki/Elliott_Mendelson

    Elliott Mendelson (May 24, 1931 – May 7, 2020) was an American logician. He was a professor of mathematics at Queens College of the City University of New York , [ 1 ] and the Graduate Center, CUNY .

  4. John L. Kelley - Wikipedia

    en.wikipedia.org/wiki/John_L._Kelley

    Kelley's 1955 text, General Topology, which eventually appeared in three editions and several translations, is a classic and widely cited graduate-level introduction to topology. An appendix sets out a new approach to axiomatic set theory, now called Morse–Kelley set theory, that builds on Von Neumann–Bernays–Gödel set theory.

  5. Topology - Wikipedia

    en.wikipedia.org/wiki/Topology

    A three-dimensional model of a figure-eight knot.The figure-eight knot is a prime knot and has an Alexander–Briggs notation of 4 1.. Topology (from the Greek words τόπος, 'place, location', and λόγος, 'study') is the branch of mathematics concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling ...

  6. Topological space - Wikipedia

    en.wikipedia.org/wiki/Topological_space

    In mathematics, a topological space is, roughly speaking, a geometrical space in which closeness is defined but cannot necessarily be measured by a numeric distance.More specifically, a topological space is a set whose elements are called points, along with an additional structure called a topology, which can be defined as a set of neighbourhoods for each point that satisfy some axioms ...

  7. Axiomatic foundations of topological spaces - Wikipedia

    en.wikipedia.org/wiki/Axiomatic_foundations_of...

    Cauchy space – Concept in general topology and analysis; Convergence space – Generalization of the notion of convergence that is found in general topology; Filters in topology – Use of filters to describe and characterize all basic topological notions and results. Sequential space – Topological space characterized by sequences

  8. Geometry and topology - Wikipedia

    en.wikipedia.org/wiki/Geometry_and_topology

    In mathematics, geometry and topology is an umbrella term for the historically distinct disciplines of geometry and topology, as general frameworks allow both disciplines to be manipulated uniformly, most visibly in local to global theorems in Riemannian geometry, and results like the Gauss–Bonnet theorem and Chern–Weil theory.

  9. Derived set (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Derived_set_(mathematics)

    In mathematics, more specifically in point-set topology, the derived set of a subset of a topological space is the set of all limit points of . It is usually denoted by S ′ . {\displaystyle S'.} The concept was first introduced by Georg Cantor in 1872 and he developed set theory in large part to study derived sets on the real line .