For example, if it's true that it's raining, and it's true that I'm inside, then it's true that it's raining, and I'm inside.
Formally:
A B ∴ ( A ∧ B )
... Larger Catechism[?], Theological Declaration of Barmen[?], Confession of 1967[?], and A Brief Statement of Faith - PCUSA[?]. The Presbyterian Church (USA) has split a ...