Idempotence (UK: /ˌɪdɛmˈpoʊtəns/, US: /ˈaɪdəm-/) is the property of certain operations in mathematics and computer science whereby they can be applied...

Idempotency of entailment is a property of logical systems that states that one may derive the same consequences from many instances of a hypothesis as...

In computer science, an operation, function or expression is said to have a side effect if it has any observable effect other than its primary effect of...

In linear algebra and functional analysis, a projection is a linear transformation P {\displaystyle P} from a vector space to itself (an endomorphism)...

a subspace of a projection is also called a projection, even if the idempotence property is lost. An everyday example of a projection is the casting...

In statistics, the Rao–Blackwell theorem, sometimes referred to as the Rao–Blackwell–Kolmogorov theorem, is a result that characterizes the transformation...

associativity: yes distributivity: with various operations, especially with or idempotency: yes monotonicity: yes truth-preserving: yes When all inputs are true...

command. Martin Fowler cites the pop() method of a stack as an example. Idempotence Domain-driven design Create, read, update and delete (CRUD) Meyer, Bertrand...

permutations Eigenvector Equilibrium Fixed points of a Möbius transformation Idempotence Infinite compositions of analytic functions Invariant (mathematics) Brown...

is a mapping c:S→S such that for all s, s1, s2 ∈ S: c(s) = c(c(s))   (idempotence), s1 R s2 if and only if c(s1) = c(s2)   (decisiveness), and s R c(s)...