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Theorems · Theorem · functional analysis

Submodule.IsCompl.isTopCompl_iff_continuous_quotientEquivOfIsCompl

∀ {R : Type u_1} [inst : Ring R] {M : Type u_2} [inst_1 : TopologicalSpace M] [inst_2 : AddCommGroup M]
  [inst_3 : Module R M] {p q : Submodule R M} [IsTopologicalAddGroup M] (h : IsCompl p q),
  Submodule.IsTopCompl p q ↔ Continuous ⇑(p.quotientEquivOfIsCompl q h)

Two complementary submodules are topological complements if and only if the linear equivalence Submodule.quotientEquivOfIsCompl is continuous.

Defined in
Mathlib.Topology.Algebra.Module.Complement
Cited by
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Foundations
Depth 88 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
RingTopologicalSpaceAddCommGroupModuleIsTopologicalAddGroup

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