more from John P. Burgess

### Single Idea 15426

#### [catalogued under 5. Theory of Logic / H. Proof Systems / 6. Sequent Calculi]

Full Idea

Instead of demonstrations which are either axioms, or follow from axioms by rules, we can have one ever-growing sequence of formulas of the form 'Axioms |- ______', where the blank is filled by Axioms, then Lemmas, then Theorems, then Corollaries.

Gist of Idea

We can build one expanding sequence, instead of a chain of deductions

Source

John P. Burgess (Philosophical Logic [2009], 5.3)

Book Reference

Burgess,John P.: 'Philosophical Logic' [Princeton 2009], p.105