Theorems · Theorem · sequences and series

tsum_pi_single

∀ {α : Type u_1} {β : Type u_2} [inst : AddCommMonoid α] [inst_1 : TopologicalSpace α] [inst_2 : DecidableEq β] (b : β)
  (a : α), ∑' (b' : β), Pi.single b a b' = a

Defined in

Mathlib.Topology.Algebra.InfiniteSum.Constructions

Cited by

3 results in Mathlib

Foundations

Depth 80 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

AddCommMonoidTopologicalSpaceDecidableEq