Closed Samuel-Lubliner closed 2 months ago
https://github.com/SageMathOER-CCC/sage-discrete-math/blob/43266a8c7b19b792dd4a86e72ff5f2b026b61197/source/logic/sec-tautology.ptx#L22
See https://github.com/SageMathOER-CCC/sage-discrete-math/pull/113#issue-2499253793
https://github.com/SageMathOER-CCC/sage-discrete-math/blob/43266a8c7b19b792dd4a86e72ff5f2b026b61197/source/logic/sec-tautology.ptx#L22