idempotent
(adjective) unchanged in value following multiplication by itself; “this matrix is idempotent”
Source: WordNet® 3.1
idempotent (not comparable)
(mathematics, computing) Said of a function: describing an action which, when performed multiple times on the same subject, has no further effect on its subject after the first time it is performed.
(mathematics) Said of an element of an algebraic structure with a binary operation (such as a group or semigroup): when the element operates on itself, the result is equal to itself.
(mathematics) Said of a binary operation: that all of the distinct elements it can operate on are idempotent (in the sense given just above).
(mathematics) Said of an algebraic structure: having an idempotent operation (in the sense above).
See the Usage notes section of nullipotent.
• nilpotent
• nullipotent
idempotent (plural idempotents)
(mathematics) An idempotent element.
(mathematics) An idempotent structure.
Source: Wiktionary
16 May 2025
(adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
