Is there any existing work on characterizations of the unprovable formulas in (general) first-order logic? i.e. Gödel's incompletness result constructs an explicit formula that is valid but unprovable: are there other not-so-scary examples of unprovable formulas? are there some attempts/theories to characterize the explicit self-referential trait which prevents these formulas to be proven in any particular calculus?
2026-03-26 17:29:27.1774546167
Characterization for unprovable formulas for first-order logic
96 Views Asked by user375735 https://math.techqa.club/user/user375735/detail AtRelated Questions in FIRST-ORDER-LOGIC
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