In mathematics, a binary relation R on a set X is transitive if, for all elements a, b, c in X, whenever R relates a to b and b to c, then R also relates...

relations. The converse of a non-symmetric relation is a second relation that always accompanies the first relation but has a different order of elements....

In mathematics, a recurrence relation is an equation according to which the n {\displaystyle n} th term of a sequence of numbers is equal to some combination...

mathematics, an equivalence relation is a binary relation that is reflexive, symmetric and transitive. The equipollence relation between line segments in...

The Planck relation (referred to as Planck's energy–frequency relation, the Planck–Einstein relation, Planck equation, and Planck formula, though the...

reflexive relation is the relation "is equal to" on the set of real numbers, since every real number is equal to itself. A reflexive relation is said to...

A symmetric relation is a type of binary relation. Formally, a binary relation R over a set X is symmetric if: ∀ a , b ∈ X ( a R b ⇔ b R a ) , {\displaystyle...

binary relation associates elements of one set called the domain with elements of another set called the codomain. Precisely, a binary relation over sets...

Second normal form (2NF), in database normalization, is a normal form. A relation is in the second normal form if it fulfills the following two requirements:...

either relation (union), removing tuples from the first relation found in the second relation (difference), extending the tuples of the first relation with...

The Second relation letter from Hernán Cortés to emperor Charles V is one of the five Letters of relation written by Hernán Cortés to Charles V, Holy...

function and the symmetry of evaluating second order partial derivatives. Derivation Derivation of the Maxwell relation can be deduced from the differential...

relation is called the arity, adicity or degree of the relation. A relation with n "places" is variously called an n-ary relation, an n-adic relation...

phrased as "a relation on X" or "a (binary) relation over X". An example of a homogeneous relation is the relation of kinship, where the relation is between...

), then the second Thomson relation does not take the simple form shown here. Now, using the second relation, the first Thomson relation becomes K = T...

relations and produces the set of tuples from the first relation that do not exist in the second relation. Difference is implemented in SQL in the form of the...

in the second sentence. The direct object is the patient the coffee table in the first sentence, and there is no direct object in the second sentence...

"An X is a Y" (simple hyponymy) while the second relation is "An X is a kind/type of Y". The second relation is said to be more discriminating and can...

to talk about winning or losing in relation to Second Life. Likewise, unlike a traditional talker[vague], Second Life contains an extensive world that...

binary relation is the relation that occurs when the order of the elements is switched in the relation. For example, the converse of the relation 'child of'...

In physics (specifically, the kinetic theory of gases), the Einstein relation is a previously unexpected[clarification needed] connection revealed independently...

In linear algebra, a linear relation, or simply relation, between elements of a vector space or a module is a linear equation that has these elements as...

vice-versa. In either case, a + c is even. A second example of an antitransitive relation: the defeated relation in knockout tournaments. If player A defeated...

A sign relation is the basic construct in the theory of signs, also known as semiotics, as developed by Charles Sanders Peirce. Thus, if a sunflower, in...

In mathematics, a binary relation R is called well-founded (or wellfounded or foundational) on a set or, more generally, a class X if every non-empty subset...

The Clausius–Clapeyron relation, in chemical thermodynamics, specifies the temperature dependence of pressure, most importantly vapor pressure, at a discontinuous...

In mathematics, an idempotent binary relation is a binary relation R on a set X (a subset of Cartesian product X × X) for which the composition of relations...

\rangle } to make this real quantity a positive number. The second stronger uncertainty relation is given by σ A 2 + σ B 2 ≥ 1 2 | ⟨ Ψ ¯ A + B ∣ ( A + B )...

relation algebra is a residuated Boolean algebra expanded with an involution called converse, a unary operation. The motivating example of a relation...

First normal form (1NF) is a property of a relation in a relational database. A relation is in first normal form if and only if no attribute domain has...