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Idempotence ( UK: / ˌɪdɛmˈpoʊtəns /, [ 1] US: / ˈaɪdəm -/) [ 2] is the property of certain operations in mathematics and computer science whereby they can be applied multiple times without changing the result beyond the initial application. The concept of idempotence arises in a number of places in abstract algebra (in particular, in ...
In propositional logic, modus ponens ( / ˈmoʊdəs ˈpoʊnɛnz /; MP ), also known as modus ponendo ponens (from Latin 'method of putting by placing'), [ 1] implication elimination, or affirming the antecedent, [ 2] is a deductive argument form and rule of inference. [ 3] It can be summarized as " P implies Q. P is true.
Grandfather clause. A grandfather clause, also known as grandfather policy, grandfathering, or being grandfathered in, is a provision in which an old rule continues to apply to some existing situations while a new rule will apply to all future cases. Those exempt from the new rule are said to have grandfather rights or acquired rights, or to ...
Proximate cause is a key principle of insurance and is concerned with how the loss or damage actually occurred. There are several competing theories of proximate cause (see Other factors ). For an act to be deemed to cause a harm, both tests must be met; proximate cause is a legal limitation on cause-in-fact. The formal Latin term for "but for ...
It’s called the 2:1 rule and it’s a hit on TikTok, so we asked a stylist for her take. Meet the Expert Kim Appelt is a fashion stylist , TV personality, author and YouTuber with 11 years of ...
In mathematics, Descartes' rule of signs, described by René Descartes in his La Géométrie, counts the roots of a polynomial by examining sign changes in its coefficients. The number of positive real roots is at most the number of sign changes in the sequence of polynomial's coefficients (omitting zero coefficients), and the difference ...
Associative property. In mathematics, the associative property[ 1] is a property of some binary operations that means that rearranging the parentheses in an expression will not change the result. In propositional logic, associativity is a valid rule of replacement for expressions in logical proofs .
Arithmetic progression. An arithmetic progression or arithmetic sequence (AP) is a sequence of numbers such that the difference from any succeeding term to its preceding term remains constant throughout the sequence. The constant difference is called common difference of that arithmetic progression. For instance, the sequence 5, 7, 9, 11, 13 ...