- directed relation
- мат. направленное отношение
Большой англо-русский и русско-английский словарь. 2001.
directed relation
Смотреть что такое "directed relation" в других словарях:
Directed relation — A directed relation or confluent relation is a mathematical relation in which::(w,x,y,z in X) (x)(y)(z)((Rxy and Rxz) imp (existw)(Ryw and Rzw))Also called diamond, amalgamation, weakly directed, or directly confluent … Wikipedia
Directed acyclic graph — An example of a directed acyclic graph In mathematics and computer science, a directed acyclic graph (DAG i … Wikipedia
Directed set — In mathematics, a directed set (or a directed preorder or a filtered set) is a nonempty set A together with a reflexive and transitive binary relation ≤ (that is, a preorder), with the additional property that every pair of elements has an upper… … Wikipedia
directed graph — noun A graph in which the edges are ordered pairs, so that, if the edge (a, b) is in the graph, the edge (b, a) need not be in the graph and is distinct from (a, b) if it is. A directed graph (A,R) is a set of vertices A together with an… … Wiktionary
Binary relation — Relation (mathematics) redirects here. For a more general notion of relation, see Finitary relation. For a more combinatorial viewpoint, see Theory of relations. In mathematics, a binary relation on a set A is a collection of ordered pairs of… … Wikipedia
Equivalence relation — In mathematics, an equivalence relation is a binary relation between two elements of a set which groups them together as being equivalent in some way. Let a , b , and c be arbitrary elements of some set X . Then a b or a ≡ b denotes that a is… … Wikipedia
Well-founded relation — In mathematics, a binary relation, R, is well founded (or wellfounded) on a class X if and only if every non empty subset of X has a minimal element with respect to R; that is, for every non empty subset S of X, there is an element m of S such… … Wikipedia
The Descent of Man, and Selection in Relation to Sex — … Wikipedia
Thematic relation — In linguistics, thematic relations express the meaning that a Noun phrase plays with respect to the action or state described by a sentence s verb. For example, in the sentence Susan ate an apple , Susan is the doer of the eating, so she is an… … Wikipedia
List of mathematics articles (D) — NOTOC D D distribution D module D D Agostino s K squared test D Alembert Euler condition D Alembert operator D Alembert s formula D Alembert s paradox D Alembert s principle Dagger category Dagger compact category Dagger symmetric monoidal… … Wikipedia
Collatz conjecture — Directed graph showing the orbits of small numbers under the Collatz map. The Collatz conjecture is equivalent to the statement that all paths eventually lead to 1 … Wikipedia
