By Kathryn Coulibaly. Donna Caputo must have an inexhaustible source of energy. It’s the only way to explain the fact that after only four years …
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Fresh observations of interstellar comet 3I/ATLAS, some made earlier but revealed only recently, show some more strange features, adding to its …
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Material Biconditional: Understanding the “If and Only If”
The material biconditional, or "if and only if" (iff), is a logical…
Iff: Understanding ‘If and Only If’
Iff, short for 'if and only if,' is a crucial logical connective…
Identity of Indiscernibles
The identity of indiscernibles posits that if two things have precisely the…
Congruence Relation
A congruence relation is an equivalence relation that preserves the operations within…