OpenLogicProject / OpenLogic

An open-source, customizable intermediate logic textbook
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Missing '!' #304

Closed ogotchey closed 2 years ago

ogotchey commented 2 years ago

The most convenient way to report a typo should reference the file and line number where the typo occurs:

Alternatively describe the location of the typo (page #, "after Theorem 5.1", etc., and mention which PDF you are referencing)

Typo location: https://github.com/OpenLogicProject/OpenLogic/blob/0552395a1249a151c8b9ca41253019d125539525/content/first-order-logic/syntax-and-semantics/substitution.tex#L122

What is the typo: A(x) lacks a preceding '!' and thus actually renders as the English 'A' instead of the Greek phi.

Proposed correction: Change $\lforall[x][A(x)]$ to $\lforall[x][!A(x)]$ in line 122 of first-order-logic/syntax-and-semantics/substitution.tex

rzach commented 2 years ago

Thanks!