Self-referential paradoxes

paradox in set theory concerning the set of all sets not containing themselves

statement of a liar who states that they are lying: for instance, declaring that "I am lying" or "everything I say is false"

famous saying by Socrates

colloquial version of Russell’s paradox: does a barber, who shaves all those — and those only — who do not shave themselves, shave himself?

logical paradox involving self-reference

a paradox in which an arbitrary claim F is proved from the mere existence of a sentence C that says of itself “If C, then F”

logical contradiction in which every possible solution to the problem is exempt: if there were some uninteresting natural numbers, there would be a smallest uninteresting number, which would be therefore interesting

paradox

apparent contadiction in metamathematics

paradox originating in ancient Greece, often cited for humorous purposes to signal the "race of speciosity" between forensic and political categories

self-referential paradox: is the word “heterological” (defined as referring to a word that does not describe itself) heterological?

self-referential paradox

liar Paradox

Logical paradox

philosopher

a variant of the liar paradox constructed by Philip Jourdain