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  2. Contraposition - Wikipedia

    en.wikipedia.org/wiki/Contraposition

    The inverse is "If a polygon is not a quadrilateral, then it does not have four sides." In this case, unlike the last example, the inverse of the statement is true. The converse is "If a polygon has four sides, then it is a quadrilateral." Again, in this case, unlike the last example, the converse of the statement is true.

  3. Converse relation - Wikipedia

    en.wikipedia.org/wiki/Converse_relation

    Although many functions do not have an inverse, every relation does have a unique converse. The unary operation that maps a relation to the converse relation is an involution , so it induces the structure of a semigroup with involution on the binary relations on a set, or, more generally, induces a dagger category on the category of relations ...

  4. Inverse (logic) - Wikipedia

    en.wikipedia.org/wiki/Inverse_(logic)

    The inverse and the converse of a conditional are logically equivalent to each other, just as the conditional and its contrapositive are logically equivalent to each other. [1] But the inverse of a conditional cannot be inferred from the conditional itself (e.g., the conditional might be true while its inverse might be false [2]). For example ...

  5. Inverse relation - Wikipedia

    en.wikipedia.org/wiki/Inverse_relation

    In mathematics, inverse relation may refer to: Converse relation or "transpose", in set theory; Negative relationship, in statistics; Inverse proportionality; Relation between two sequences, expressing each of them in terms of the other

  6. Converse (logic) - Wikipedia

    en.wikipedia.org/wiki/Converse_(logic)

    In logic and mathematics, the converse of a categorical or implicational statement is the result of reversing its two constituent statements. For the implication P → Q, the converse is Q → P. For the categorical proposition All S are P, the converse is All P are S. Either way, the truth of the converse is generally independent from that of ...

  7. These Are the Best New Songs We Heard This Month - AOL

    www.aol.com/best-songs-heard-month-142900895.html

    We finally—finally—made it to the end of the year.And though the music releases have gone from summer’s deluge to a steady trickle, that doesn’t mean there aren’t some great new songs in ...

  8. Transitive relation - Wikipedia

    en.wikipedia.org/wiki/Transitive_relation

    The converse (inverse) of a transitive relation is always transitive. For instance, knowing that "is a subset of" is transitive and "is a superset of" is its converse, one can conclude that the latter is transitive as well. The intersection of two transitive relations is always transitive. [4]

  9. Tom Hardy Offers to Pay Over $300,000 of Crew’s Wages ... - AOL

    www.aol.com/tom-hardy-offers-pay-over-143932689.html

    Heroes don’t always wear capes — sometimes they’re covered in venom … at least if you’re Tom Hardy.. The actor, 47, reportedly offered to pay £250,000 — or approximately $315,000 ...