Math 2.0

Concept

Strength (mathematical logic)

Summary

The relative strength of two systems of formal logic can be defined via model theory. Specifically, a logic α\alpha is said to be as strong as a logic β\beta if every elementary class in β\beta is an elementary class in α\alpha.

Further reading

  1. Wikipedia, page 28870339, revision 1294787021, Strength (mathematical logic). adopted
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Changed4 November 2026

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