(set theory) A method for giving a definition of equivalence classes for equivalence relations on a proper class, relying on the axiom of regularity but not on the axiom of choice.

plural of card trick

Any magic trick involving playing cards.

plural of confidence trick

(mathematics) A method for proving Gödel's incompleteness theorems without the assumption that the theory being considered is ω-consistent. While Gödel's original proof uses a sentence that states (informally) "This sentence is not provable", Rosser's trick uses a formula that says "If this sentence is provable, there is a shorter proof of its negation".

A feature of digital video systems that mimics the visual feedback given during fast forward and rewind operations that were provided by analog systems such as VCRs.

plural of bag of tricks

plural of hat-trick

Used other than figuratively or idiomatically: see play, tricks. / Of one's eyes, mind, etc.: to deceive or mislead one.

Alternative spelling of parlour trick