93theorem succ_ne_zero (n : LogicNat) : succ n ≠ zero := by
proof body
Term-mode proof.
94 intro h; cases h 95 96/-- **Peano P2 (successor injectivity)**: forced by the constructor 97disjointness of the inductive type, which itself reflects the 98injectivity of multiplication by the generator on the orbit. -/
used by (1)
From the project-wide theorem graph. These declarations reference this one in their body.