Editing Congruence

{{Wiktionary|congruence|≅}}
'''Congruence''' may refer to:
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==Mathematics==
* [[Congruence (geometry)]], being the same size and shape
* Congruence or [[congruence relation]], in abstract algebra, an equivalence relation on an algebraic structure that is compatible with the structure
* In [[modular arithmetic]], having the same remainder when divided by a specified integer
**[[Ramanujan's congruences]], congruences for the partition function, {{math|''p''(''n'')}}, first discovered by Ramanujan in 1919
**[[Congruence subgroup]], a subgroup defined by congruence conditions on the entries of a matrix group with integer entries
**[[Congruence of squares]], in number theory, a congruence commonly used in integer factorization algorithms
* [[Matrix congruence]], an equivalence relation between two matrices
* [[Congruence (manifolds)]], in the theory of smooth manifolds, the set of integral curves defined by a nonvanishing vector field defined on the manifold
* [[Congruence (general relativity)]], in general relativity, a congruence in a four-dimensional Lorentzian manifold that is interpreted physically as a model of spacetime or a bundle of world lines
* [[Zeller's congruence]], an algorithm to calculate the day of the week for any date
* [[Scissors congruence]], related to Hilbert's third problem

==Mineralogy and chemistry==
In mineralogy and chemistry, the term congruent (or incongruent) may refer to: 
<!-- Congruent redirect to Congruence -->
* [[Solubility#Incongruent_dissolution|Congruent dissolution]]: substances dissolve congruently when the composition of the solid and the dissolved solute stoichiometrically match
* [[Congruent melting]] occurs during melting of a compound when the composition of the liquid that forms is the same as the composition of the solid
* [[Incongruent transition]], in chemistry, is a mass transition between two phases which involves a change in chemical composition

==Psychology==
* In Carl Rogers' personality theory, the compliance between ideal self and actual self-see [[Carl Rogers#Incongruity]]
* [[Mood congruence]] between feeling or emotion (in psychiatry and psychology)
* Incongruity [[theory of humor]]

== See also ==
* [[Congruence bias]], a type of cognitive bias, similar to confirmation bias
* [[Congruence principle (disambiguation)]]
* [[Hatch mark]], geometric notation for congruent line segments
* [[≅]]
* [[≡ (disambiguation)]]
* [[≃]]

{{disambiguation}}