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Combinatorial principles

Lists of equations
Constitutive equationLaws of scienceDefining equation (physical chemistry)Defining equation (physics)List of equations in classical mechanicsTable of thermodynamic equationsList of equations in wave t ...
2014-3-16 11:28
Other equations
MathsAlgebraic equationPolynomial equationsLinear equationQuadratic equationCubic equationBiquadratic equationQuartic equationQuintic equationSextic equationCharacteristic equationClass equationCompar ...
2014-3-16 11:28
Eponymous equations
MathematicsCauchy–Riemann equationsChapman–Kolmogorov equationClairaut's equationFredholm integral equationHill differential equationIshimori equationLaplace's equationMaurer–Cartan equationPell's ...
2014-3-16 11:27
Bijective proof--Double counting.....
Main article: Double counting (proof technique)Double counting is a technique that equates two expressions that count the size of a set in two ways.Pigeonhole principleMain article: Pigeonhole princip ...
2014-3-16 11:26
Inclusion-exclusion principle
Main article: Inclusion-exclusion principleThe inclusion-exclusion principle relates the size of the union of multiple sets, the size of each set, and the size of each possible intersection of the set ...
2014-3-16 11:25
Rule of product
Main article: Rule of productThe rule of product is another intuitive principle stating that if there are a ways to do something and b ways to do another thing, then there are a · b ways to do both t ...
2014-3-16 11:24
Rule of sum
Main article: Rule of sumThe rule of sum is an intuitive principle stating that if there are a possible outcomes for an event (or ways to do something) and b possible outcomes for another event (or wa ...
2014-3-16 11:24
Combinatorial principles
In proving results in combinatorics several useful combinatorial rules or combinatorial principles are commonly recognized and used.The rule of sum, rule of product, and inclusion-exclusion principle ...
2014-3-16 11:24

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