Mathematical Philosophy

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1.Telling TRUE to something TRUE is a TRUE action.
Mathematical formula:

• x + = +

2.Saying TRUE to something WRONG, or otherwise saying WRONG to something TRUE is a WRONG action.
Mathematical formula:

• x - = -

• x + = -

3.Saying WRONG to something WRONG is a TRUE action.
Mathematical formula:

• x - = +

The math lesson is full of meaning, which we can take as a life lesson.