Contrapositive vs Null - What's the difference?
contrapositive | null |
A non-existent or empty value or set of values.
Zero]] quantity of [[expression, expressions; nothing.
Something that has no force or meaning.
(computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
(computing) the attribute of an entity that has no valid value.
One of the beads in nulled work.
(statistics) null hypothesis
Having no validity, "null and void"
insignificant
* 1924 , Marcel Proust, Within a Budding Grove :
absent or non-existent
(mathematics) of the null set
(mathematics) of or comprising a value of precisely zero
(genetics, of a mutation) causing a complete loss of gene function, amorphic.
As nouns the difference between contrapositive and null
is that contrapositive is the inverse of the converse of a given proposition while null is a non-existent or empty value or set of values.As an adjective null is
having no validity, "null and void.As a verb null is
to nullify; to annul.contrapositive
English
(Contraposition)Usage notes
* From a proposition, its inverse, its converse and its contrapositive are derived as follows: *: Proposition: "If P then Q." *: Inverse: "If not P then not Q." *: Converse: "If Q then P." *: Contrapositive: "If not Q then not P." * If a proposition is true then its contrapositive is, too. Thus, if the statement "If I'm Roman, then I can speak Latin" is true, then it logically follows that the statement "If I can't speak Latin, then I'm not Roman" must also be true.See also
* converse * inversenull
English
Noun
(en noun)- (Francis Bacon)
- Since no date of birth was entered for the patient, his age is null .
Adjective
(en adjective)- In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.