Finsupp.sub_single_one_add

∀ {ι : Type u_1} {a : ι} {u u' : ι →₀ ℕ}, u a ≠ 0 → (u - fun₀ | a => 1) + u' = u + u' - fun₀ | a => 1

Defined in: Mathlib.Data.Finsupp.Order
Cited by: 1 results in Mathlib
Foundations: Depth 71 from the axioms · uses propext, Classical.choice, Quot.sound

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