Sentence Relations and Truth - Logic and Truth

6 important questions on Sentence Relations and Truth - Logic and Truth

What is the modus ponens?

If a, then b.
a
therefore b

What is the modus tollens?

If not a, then b.
not a
therefore b

What is hypothetical syllogism?

If a, then b
If b, then c
If a, therefore then c
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What is disjunctive syllogism?

If not a, then b
not a
therefore b

What is empirical truth?

Truth that can be checked, because we have access to the facts of the world.

What is a material implication?

Saying that "if this, then I do this". Its symbol is an arrow.

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