Math 2.0

Concept

Paradoxes of material implication

Summary

The paradoxes of material implication are a group of classically true formulae involving material conditionals whose translations into natural language are intuitively false when the conditional is translated with English words such as "implies" or "if ... then ...". They are sometimes phrased as arguments, since they are easily turned into arguments with modus ponens: if it is true that "if PP then QQ" (P→QP \rightarrow Q), then from that together with PP, one may argue for QQ. Among them are the following:

Further reading

  1. Wikipedia, page 12857474, revision 1360716189, Paradoxes of material implication. adopted
About this page
Tag3T7ZJFC9QF
URIm2://3T7ZJFC9QF
Aliasesparadox-of-entailment, paradox-of-material-implication, paradox-of-the-material-conditional, paradoxes-of-material-conditionals, paradoxes-of-the-material-conditional
Kindconcept
WritingW1 stated
Same as
Changed4 November 2026

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