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Determine whether a formula is valid #11

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0xGeorgii opened this issue Jan 12, 2021 · 0 comments
Open

Determine whether a formula is valid #11

0xGeorgii opened this issue Jan 12, 2021 · 0 comments
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enhancement New feature or request
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1.0.0

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0xGeorgii commented Jan 12, 2021 •
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Definition A formula is said to be a tautology (valid) if and only if is true under all its interpretations. A formula is said to be invalid if it is not a tautology.

ref: Symbolic Logic and Mechanical Theorem Proving (Computer Science and Applied Mathematics) 1st Edition,
by Chin-Liang Chang, Richard Char-Tung Lee, p. 11
@0xGeorgii 0xGeorgii added enhancement New feature or request good first issue Good for newcomers help wanted Extra attention is needed labels Mar 29, 2021
@0xGeorgii 0xGeorgii added this to the 1.0.0 milestone Feb 4, 2022
@0xGeorgii 0xGeorgii changed the title Determine wether a formula is tautology Determine whether a formula is tautology Feb 6, 2022
@0xGeorgii 0xGeorgii changed the title Determine whether a formula is tautology Determine whether a formula is valid Feb 7, 2022
@0xGeorgii 0xGeorgii removed help wanted Extra attention is needed good first issue Good for newcomers labels Feb 7, 2022
@0xGeorgii 0xGeorgii self-assigned this Feb 7, 2022
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