- Branch of mathematical logic that studies setsSet 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.en.wikipedia.org/wiki/Set_theory
集合论 - 维基百科，自由的百科全书 - zh.wikipedia.org
集合论 - 维基百科，自由的百科全书
集合論（英語： set theory ）或稱集論，是研究集合（由一堆抽象对象構成的整體）的數學理論，包含集合和元素（或稱為成員）、關係等最基本數學概念。在大多數現代數學的公式化中， …
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策梅洛-弗兰克尔集合论 - 维基百科，自由的百科全书
策梅洛-弗兰克尔集合论（英語： Zermelo-Fraenkel Set Theory ），是数学基础中最常用的一階 公理化集合论。 含 选择公理 時常简写为 ZFC ，不含選擇公理的則簡寫為 ZF 。
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Zermelo–Fraenkel set theory - Wikipedia
In set theory, Zermelo–Fraenkel set theory, named after mathematicians Ernst Zermelo and Abraham Fraenkel, is an axiomatic system that was proposed in the early twentieth century …
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Set theory (music) - Wikipedia
Musical set theory provides concepts for categorizing musical objects and describing their relationships. Howard Hanson first elaborated many of the concepts for analyzing tonal music. …
朴素集合论 - 维基百科，自由的百科全书
公理化集合論的非正式表示，例如保羅·哈爾莫斯的《 Naive Set Theory （ 英语 ： Naive Set Theory (book) ） 》。 格奥尔格·康托尔理的其他版本，或是其他非公理化的理論。
Set theory - Simple English Wikipedia, the free encyclopedia
Set theory is the study of sets in mathematics. Sets are collections of objects. We refer to these objects as "elements" or "members" of the set. To write a set, one wraps the numbers in …
Set (mathematics) - Wikipedia
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 …
General set theory - Wikipedia
General set theory (GST) is George Boolos's (1998) name for a fragment of the axiomatic set theory Z. GST is sufficient for all mathematics not requiring infinite sets, and is the weakest …
