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def definition def or abbrev

identity

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 105def identity (V : VantageCategory) : VantageFunctor V V := {

proof body

Definition body.

 106  map_state := id,
 107  map_trans := id,
 108  map_id := fun _ => rfl,
 109  preserves_strain := fun _ => rfl
 110}
 111
 112end VantageFunctor
 113
 114/-! ## Vantage Equivalence -/
 115
 116/-- An equivalence between vantage categories.
 117
 118Two vantages are equivalent if there exist mutually inverse functors
 119that both preserve strain.
 120-/

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