plural of deductible

In a deductive manner; using deduction

plural of deductibility

The ability to be deducted, such as from one's taxes

Alternative form of deductibility

The quality of being deductive.

(logic) A procedure for "discharging" assumptions from an inference, causing them to become antecedents of the conclusion; or vice versa. Symbolically, the conversion of an inference of the form P,A⊢C to an inference of the form P⊢A→C or vice versa, where ⊢ is the turnstile symbol. The validity of the procedure is a metatheorem of the given logical theory.

A kind of proof calculus in which logical reasoning is expressed by inference rules closely related to the "natural" way of reasoning, in contrast to axiomatic systems.

plural of deduction theorem

Inference in which the conclusion cannot be false given that the premises are true. / Inference in which the conclusion is of no greater generality than the premises.