Talk:Strength (mathematical logic)

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Philosophy: Logic Stub‑class Mid‑importance

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	Logic

Shouldn't that read: " $\alpha$ is said to be as strong as a logic $\beta$ if every elementary class in $\beta$ is an elementary class in $\alpha$ ?" At least that's what the cited reference (Extended logics: the general framework) appears to be stating. — Preceding unsigned comment added by 173.35.108.182 (talk) 02:00, 4 February 2013 (UTC)[reply]

Strength vs. Weakness

But this article does not inform when one system is weaker and the other stronger. Can some elaborate, or explain why non is need?