# If [ilmath]\Gamma\models A[/ilmath] then the formula set [ilmath]\Gamma\cup\{\neg A\} [/ilmath] is not satisfiable

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**Stub grade: C**

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At least flesh out the statement

## Contents

## Statement

(As in title)^{[1]}

## Proof

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The message provided is:

Could use a proof to be honest..., see page 31 of

^{[1]}## References