`BookProof.ChapterGaugeParametrization.fiberGauge_ne_bot_iff` (π : X → Y) : fiberGauge π ≠ ⊥ ↔ ¬ Function.Injective π

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`BookProof.ChapterGaugeParametrization.fiberGauge_ne_bot_iff` (π : X → Y) : fiberGauge π ≠ ⊥ ↔ ¬ Function.Injective π · Prove2Me