`BookProof.ChapterFreeFieldBornFiberSpectrum.bornFiber_card_achievable_iff` {c : ℕ} : (∃ p : ↥(stdSimplex ℝ (Fin n)), Nat.card ↥(bornMapSphere n ⁻¹' {p}) = c) ↔ ∃ k, 1 ≤ k ∧...

Initializing...

`BookProof.ChapterFreeFieldBornFiberSpectrum.bornFiber_card_achievable_iff` {c : ℕ} : (∃ p : ↥(stdSimplex ℝ (Fin n)), Nat.card ↥(bornMapSphere n ⁻¹' {p}) = c) ↔ ∃ k, 1 ≤ k ∧... · Prove2Me