plural of deductible

Alternative form of deductibility

Third-person singular simple present indicative form of deduct

Of, pertaining to, or based on deduction (process of reasoning). / (logic) Based on inferences from general principles.

In a deductive manner; using deduction

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.

That is exempt from payment of income tax.

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