English
If q is uniform, then for any representation ⟨a,f⟩ and index i, supp(abs ⟨a,f⟩) i equals f i '' univ.
Русский
Если q однороден, то для любого представления ⟨a,f⟩ и индекса i опора(abs ⟨a,f⟩) i равна f i '' univ.
LaTeX
$$$$ \\forall i,\\ \\mathrm{supp}(\\mathrm{abs}\\langle a,f\\rangle)\\,i = f\\,i'' univ. $$$$
Lean4
theorem supp_eq_of_isUniform (h : q.IsUniform) {α : TypeVec n} (a : q.P.A) (f : q.P.B a ⟹ α) :
∀ i, supp (abs ⟨a, f⟩) i = f i '' univ := by
intro; ext u; rw [mem_supp]; constructor
· intro h'
apply h' _ _ rfl
intro h' a' f' e
rw [← h _ _ _ _ e.symm]; apply h'