English
For X has right dual structure, the right-hom equivalence interacts with whiskering on the left and evaluation to yield a standard evaluation–whisker identity.
Русский
Для X с правым дуальным строением эквивалентность правого гомоморфизма взаимодействует с левым перетасовкой и оценкой, образуя стандартное тождество оценки и перетасовки.
LaTeX
$$$(\\mathrm{tensorRightHomEquiv}\\,(X',X)\\;Y\\;Y')(f)^{\\!-1} (f \\circ g) = g \\circ (\\mathrm{Exac tPairing}.evaluation)$$$
Lean4
@[simp]
theorem tensorRightHomEquiv_whiskerRight_comp_evaluation {X Y : C} [HasRightDual X] (f : Y ⟶ Xᘁ) :
(tensorRightHomEquiv _ _ _ _) (f ▷ X ≫ ε_ X (Xᘁ)) = f ≫ (λ_ _).inv :=
calc
_ = 𝟙 _ ⊗≫ (Y ◁ η_ X Xᘁ ≫ f ▷ (X ⊗ Xᘁ)) ⊗≫ ε_ X Xᘁ ▷ Xᘁ := by dsimp [tensorRightHomEquiv]; monoidal
_ = f ⊗≫ (Xᘁ ◁ η_ X Xᘁ ⊗≫ ε_ X Xᘁ ▷ Xᘁ) := by rw [whisker_exchange]; monoidal
_ = _ := by rw [coevaluation_evaluation''];
monoidal
-- Next four lemmas passing `fᘁ` or `ᘁf` through (co)evaluations.