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  2. Antisymmetric relation - Wikipedia

    en.wikipedia.org/wiki/Antisymmetric_relation

    The definition of antisymmetry says nothing about whether actually holds or not for any . An antisymmetric relation R {\displaystyle R} on a set X {\displaystyle X} may be reflexive (that is, a R a {\displaystyle aRa} for all a ∈ X {\displaystyle a\in X} ), irreflexive (that is, a R a {\displaystyle aRa} for no a ∈ X {\displaystyle a\in X ...

  3. Antisymmetry - Wikipedia

    en.wikipedia.org/wiki/Antisymmetry

    In linguistics, antisymmetry is a syntactic theory presented in Richard S. Kayne's 1994 monograph The Antisymmetry of Syntax. [1] It asserts that grammatical hierarchies in natural language follow a universal order, namely specifier-head-complement branching order .

  4. Antisymmetric - Wikipedia

    en.wikipedia.org/wiki/Antisymmetric

    Antisymmetric or skew-symmetric may refer to: . Antisymmetry in linguistics; Antisymmetry in physics; Antisymmetric relation in mathematics; Skew-symmetric graph; Self-complementary graph

  5. Indistinguishable particles - Wikipedia

    en.wikipedia.org/wiki/Indistinguishable_particles

    The choice of symmetry or antisymmetry is determined by the species of particle. For example, symmetric states must always be used when describing photons or helium-4 atoms, and antisymmetric states when describing electrons or protons. Particles which exhibit symmetric states are called bosons. The nature of symmetric states has important ...

  6. Antisymmetric tensor - Wikipedia

    en.wikipedia.org/wiki/Antisymmetric_tensor

    In mathematics and theoretical physics, a tensor is antisymmetric on (or with respect to) an index subset if it alternates sign (+/−) when any two indices of the subset are interchanged.

  7. Dichromatic symmetry - Wikipedia

    en.wikipedia.org/wiki/Dichromatic_symmetry

    A more precise definition is "operations of antisymmetry transform objects possessing two possible values of a given property from one value to the other." [9] Dichromatic symmetry refers specifically to two-coloured symmetry; this can be extended to three or more colours in which case it is termed polychromatic symmetry. [10]

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  9. Partially ordered set - Wikipedia

    en.wikipedia.org/wiki/Partially_ordered_set

    By definition, every strict weak order is a strict partial order. The set of subsets of a given set (its power set) ordered by inclusion (see Fig. 1). Similarly, the set of sequences ordered by subsequence, and the set of strings ordered by substring. The set of natural numbers equipped with the relation of divisibility. (see Fig. 3 and Fig. 6)