Argumentum a fortiori
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Argumentum a fortiori is a form of argumentation that draws upon existing confidence in a proposition to argue in favour of a second proposition that is held to be implicit in, or even more certain th
Where a bottle is known to be able to hold a pint of liquid, it could a fortiori be argued that it would also be able to hold half a pint.
Logic
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Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the study of deductively valid inferences or logical truths. It examines how conclusions follow fro
Argumentum a fortiori
…that if (1) holds, then (2) will also hold. Therefore, any proof of (1) also suffices as a proof of (2). Thus, (2) is an "a fortiori" argument. In logic, a maiore ad minus describes a simple and obvious inference from a claim about a stronger entity, greater quantity, or general class to one about a…
Young America's dilemma: Shall I be wise and great, or rich and powerful? (poster from 1901). This is an example of a false dilemma: an informal fallacy using a disjunctive premise that excludes viable alternatives.
Bertrand Russell made various contributions to mathematical logic.
Aristotle Altemps Inv 8575
Avicenne Avicenna Ibn Sina CIPB2067