Mathematical set containing a finite number of elements
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In mathematics, particularly set theory, a finite set is a set that has a finite number of elements. Informally, a finite set is a set which one could in principle count and finish counting. For example,
is a finite set with five elements. The number of elements of a finite set is a natural number (possibly zero) and is called the cardinality (or the cardinal number) of the set. A set that is not a finite set is called an infinite set. For example, the set of all positive integers is infinite:
Finite sets are particularly important in combinatorics, the mathematical study of counting. Many arguments involving finite sets rely on the pigeonhole principle, which states that there cannot exist an injective function from a larger finite set to a smaller finite set.
mathematics, particularly set theory, a finiteset is a set that has a finite number of elements. Informally, a finiteset is a set which one could in principle...
mathematics and set theory, hereditarily finitesets are defined as finitesets whose elements are all hereditarily finitesets. In other words, the set itself...
numbers. While the cardinality of a finiteset is just the number of its elements, extending the notion to infinite sets usually starts with defining the...
cofinite subset of a set X {\displaystyle X} is a subset A {\displaystyle A} whose complement in X {\displaystyle X} is a finiteset. In other words, A...
In set theory, an infinite set is a set that is not a finiteset. Infinite sets may be countable or uncountable. The set of natural numbers (whose existence...
algebraic geometry, Galois theory, finite geometry, cryptography and coding theory. A finite field is a finiteset that is a field; this means that multiplication...
z}, {y, z}, {x, y, z}}. If S is a finiteset with the cardinality |S| = n (i.e., the number of all elements in the set S is n), then the number of all the...
(first, second, nth, etc.) aimed to extend enumeration to infinite sets. A finiteset can be enumerated by successively labeling each element with the least...
term "discrete mathematics". The set of objects studied in discrete mathematics can be finite or infinite. The term finite mathematics is sometimes applied...
Look up finite, finitely, or finiteness in Wiktionary, the free dictionary. Finite is the opposite of infinite. It may refer to: Finiteset, a set whose...
a set. In the case of a finiteset, its cardinal number, or cardinality is therefore a natural number. For dealing with the case of infinite sets, the...
used in combinatorics, orders subsets of a given finiteset by assigning a total order to the finiteset, and converting subsets into increasing sequences...
mathematics, a set is countable if either it is finite or it can be made in one to one correspondence with the set of natural numbers. Equivalently, a set is countable...
elements of finitesets, usually grouped into infinite families, such as the family of sets each consisting of all permutations of some finiteset. There are...
sum of the elements of a finiteset, one is inevitably led to the convention that the sum of the elements of the empty set (the empty sum) is zero. The...
In automata theory, a finite-state machine is called a deterministic finite automaton (DFA), if each of its transitions is uniquely determined by its...
of determining the number of elements of a finiteset of objects; that is, determining the size of a set. The traditional way of counting consists of...
(which is actually an indirect reference to types in Typed Set Theory). The axioms in a finite axiomatization correspond to natural basic constructions...
In mathematics, a finite topological space is a topological space for which the underlying point set is finite. That is, it is a topological space which...
condition. In other contexts, only chains that are finitesets are considered. In this case, one talks of a finite chain, often shortened as a chain. In this...
B . {\displaystyle A\subseteq B{\text{ if and only if }}A\cup B=B.} A finiteset A is a subset of B, if and only if the cardinality of their intersection...
fuzzy set A = ( U , m ) {\displaystyle A=(U,m)} . For a finiteset U = { x 1 , … , x n } , {\displaystyle U=\{x_{1},\dots ,x_{n}\},} the fuzzy set ( U ...
II-finite, III-finite, IV-finite, V-finite, VI-finite and VII-finite. I-finiteness is the same as normal finiteness. IV-finiteness is the same as Dedekind-finiteness...