Documentation

Mathlib.Topology.Algebra.ContinuousMonoidHom

Continuous Monoid Homs #

This file defines the space of continuous homomorphisms between two topological groups.

Main definitions #

structure ContinuousAddMonoidHom (A : Type u_7) (B : Type u_8) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] extends A →+ B, C(A, B) :
Type (max u_7 u_8)

The type of continuous additive monoid homomorphisms from A to B.

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    structure ContinuousMonoidHom (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] extends A →* B, C(A, B) :
    Type (max u_2 u_3)

    The type of continuous monoid homomorphisms from A to B.

    When possible, instead of parametrizing results over (f : ContinuousMonoidHom A B), you should parametrize over (F : Type*) [FunLike F A B] [ContinuousMapClass F A B] [MonoidHomClass F A B] (f : F).

    When you extend this structure, make sure to extend ContinuousMapClass and/or MonoidHomClass, if needed.

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      @[deprecated]

      ContinuousAddMonoidHomClass F A B states that F is a type of continuous additive monoid homomorphisms.

      Deprecated and changed from a class to a structure. Use [AddMonoidHomClass F A B] [ContinuousMapClass F A B] instead.

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        @[deprecated]
        structure ContinuousMonoidHomClass (F : Type u_1) (A : outParam (Type u_7)) (B : outParam (Type u_8)) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] [FunLike F A B] extends MonoidHomClass F A B, ContinuousMapClass F A B :

        ContinuousMonoidHomClass F A B states that F is a type of continuous monoid homomorphisms.

        Deprecated and changed from a class to a structure. Use [MonoidHomClass F A B] [ContinuousMapClass F A B] instead.

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          Equations
          • ContinuousMonoidHom.instFunLike = { coe := fun (f : ContinuousMonoidHom A B) => (↑f.toMonoidHom).toFun, coe_injective' := }
          Equations
          • ContinuousAddMonoidHom.instFunLike = { coe := fun (f : ContinuousAddMonoidHom A B) => (↑f.toAddMonoidHom).toFun, coe_injective' := }
          theorem ContinuousAddMonoidHom.ext {A : Type u_2} {B : Type u_3} [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] {f g : ContinuousAddMonoidHom A B} (h : ∀ (x : A), f x = g x) :
          f = g
          theorem ContinuousMonoidHom.ext {A : Type u_2} {B : Type u_3} [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] {f g : ContinuousMonoidHom A B} (h : ∀ (x : A), f x = g x) :
          f = g
          theorem ContinuousMonoidHom.toContinuousMap_injective {A : Type u_2} {B : Type u_3} [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] :
          Function.Injective ContinuousMonoidHom.toContinuousMap
          theorem ContinuousAddMonoidHom.toContinuousMap_injective {A : Type u_2} {B : Type u_3} [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] :
          Function.Injective ContinuousAddMonoidHom.toContinuousMap
          @[deprecated ContinuousMonoidHom.mk]
          def ContinuousMonoidHom.mk' {A : Type u_2} {B : Type u_3} [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] (toMonoidHom : A →* B) (continuous_toFun : Continuous (↑toMonoidHom).toFun := by continuity) :

          Alias of ContinuousMonoidHom.mk.

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            @[deprecated ContinuousAddMonoidHom.mk]
            def ContinuousAddMonoidHom.mk' {A : Type u_7} {B : Type u_8} [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] (toAddMonoidHom : A →+ B) (continuous_toFun : Continuous (↑toAddMonoidHom).toFun := by continuity) :

            Alias of ContinuousAddMonoidHom.mk.

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              Composition of two continuous homomorphisms.

              Equations
              • g.comp f = { toMonoidHom := g.comp f.toMonoidHom, continuous_toFun := }
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                Composition of two continuous homomorphisms.

                Equations
                • g.comp f = { toAddMonoidHom := g.comp f.toAddMonoidHom, continuous_toFun := }
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                  @[simp]
                  theorem ContinuousMonoidHom.comp_toFun {A : Type u_2} {B : Type u_3} {C : Type u_4} [Monoid A] [Monoid B] [Monoid C] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace C] (g : ContinuousMonoidHom B C) (f : ContinuousMonoidHom A B) (a✝ : A) :
                  (g.comp f) a✝ = g.toMonoidHom (f.toMonoidHom a✝)
                  @[simp]
                  theorem ContinuousAddMonoidHom.comp_toFun {A : Type u_2} {B : Type u_3} {C : Type u_4} [AddMonoid A] [AddMonoid B] [AddMonoid C] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace C] (g : ContinuousAddMonoidHom B C) (f : ContinuousAddMonoidHom A B) (a✝ : A) :
                  (g.comp f) a✝ = g.toAddMonoidHom (f.toAddMonoidHom a✝)

                  Product of two continuous homomorphisms on the same space.

                  Equations
                  • f.prod g = { toMonoidHom := f.prod g.toMonoidHom, continuous_toFun := }
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                    Product of two continuous homomorphisms on the same space.

                    Equations
                    • f.prod g = { toAddMonoidHom := f.prod g.toAddMonoidHom, continuous_toFun := }
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                      @[simp]
                      theorem ContinuousAddMonoidHom.prod_toFun {A : Type u_2} {B : Type u_3} {C : Type u_4} [AddMonoid A] [AddMonoid B] [AddMonoid C] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace C] (f : ContinuousAddMonoidHom A B) (g : ContinuousAddMonoidHom A C) (i : A) :
                      (f.prod g) i = (f.toAddMonoidHom i, g.toAddMonoidHom i)
                      @[simp]
                      theorem ContinuousMonoidHom.prod_toFun {A : Type u_2} {B : Type u_3} {C : Type u_4} [Monoid A] [Monoid B] [Monoid C] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace C] (f : ContinuousMonoidHom A B) (g : ContinuousMonoidHom A C) (i : A) :
                      (f.prod g) i = (f.toMonoidHom i, g.toMonoidHom i)

                      Product of two continuous homomorphisms on different spaces.

                      Equations
                      • f.prodMap g = { toMonoidHom := f.prodMap g.toMonoidHom, continuous_toFun := }
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                        Product of two continuous homomorphisms on different spaces.

                        Equations
                        • f.prodMap g = { toAddMonoidHom := f.prodMap g.toAddMonoidHom, continuous_toFun := }
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                          @[simp]
                          theorem ContinuousMonoidHom.prodMap_toFun {A : Type u_2} {B : Type u_3} {C : Type u_4} {D : Type u_5} [Monoid A] [Monoid B] [Monoid C] [Monoid D] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace C] [TopologicalSpace D] (f : ContinuousMonoidHom A C) (g : ContinuousMonoidHom B D) (i : A × B) :
                          (f.prodMap g) i = (f.toMonoidHom i.1, g.toMonoidHom i.2)
                          @[simp]
                          theorem ContinuousAddMonoidHom.prodMap_toFun {A : Type u_2} {B : Type u_3} {C : Type u_4} {D : Type u_5} [AddMonoid A] [AddMonoid B] [AddMonoid C] [AddMonoid D] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace C] [TopologicalSpace D] (f : ContinuousAddMonoidHom A C) (g : ContinuousAddMonoidHom B D) (i : A × B) :
                          (f.prodMap g) i = (f.toAddMonoidHom i.1, g.toAddMonoidHom i.2)
                          @[deprecated ContinuousMonoidHom.prodMap]

                          Alias of ContinuousMonoidHom.prodMap.


                          Product of two continuous homomorphisms on different spaces.

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                            @[deprecated ContinuousAddMonoidHom.prodMap]

                            Alias of ContinuousAddMonoidHom.prodMap.


                            Product of two continuous homomorphisms on different spaces.

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                              The trivial continuous homomorphism.

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                                The trivial continuous homomorphism.

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                                  @[simp]
                                  @[simp]
                                  theorem ContinuousMonoidHom.one_toFun (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] (x✝ : A) :

                                  The identity continuous homomorphism.

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                                    The identity continuous homomorphism.

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                                      @[simp]

                                      The continuous homomorphism given by projection onto the first factor.

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                                        The continuous homomorphism given by projection onto the first factor.

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                                          @[simp]
                                          theorem ContinuousMonoidHom.fst_toFun (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] (self : A × B) :
                                          (ContinuousMonoidHom.fst A B) self = self.1
                                          @[simp]
                                          theorem ContinuousAddMonoidHom.fst_toFun (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] (self : A × B) :
                                          (ContinuousAddMonoidHom.fst A B) self = self.1

                                          The continuous homomorphism given by projection onto the second factor.

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                                            The continuous homomorphism given by projection onto the second factor.

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                                              @[simp]
                                              theorem ContinuousMonoidHom.snd_toFun (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] (self : A × B) :
                                              (ContinuousMonoidHom.snd A B) self = self.2
                                              @[simp]
                                              theorem ContinuousAddMonoidHom.snd_toFun (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] (self : A × B) :
                                              (ContinuousAddMonoidHom.snd A B) self = self.2

                                              The continuous homomorphism given by inclusion of the first factor.

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                                                The continuous homomorphism given by inclusion of the first factor.

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                                                  @[simp]
                                                  theorem ContinuousMonoidHom.inl_toFun (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] (i : A) :
                                                  (ContinuousMonoidHom.inl A B) i = ((ContinuousMonoidHom.id A).toMonoidHom i, (ContinuousMonoidHom.one A B).toMonoidHom i)
                                                  @[simp]
                                                  theorem ContinuousAddMonoidHom.inl_toFun (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] (i : A) :
                                                  (ContinuousAddMonoidHom.inl A B) i = ((ContinuousAddMonoidHom.id A).toAddMonoidHom i, (ContinuousAddMonoidHom.zero A B).toAddMonoidHom i)

                                                  The continuous homomorphism given by inclusion of the second factor.

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                                                    The continuous homomorphism given by inclusion of the second factor.

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                                                      @[simp]
                                                      theorem ContinuousMonoidHom.inr_toFun (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] (i : B) :
                                                      (ContinuousMonoidHom.inr A B) i = ((ContinuousMonoidHom.one B A).toMonoidHom i, (ContinuousMonoidHom.id B).toMonoidHom i)
                                                      @[simp]
                                                      theorem ContinuousAddMonoidHom.inr_toFun (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] (i : B) :
                                                      (ContinuousAddMonoidHom.inr A B) i = ((ContinuousAddMonoidHom.zero B A).toAddMonoidHom i, (ContinuousAddMonoidHom.id B).toAddMonoidHom i)

                                                      The continuous homomorphism given by the diagonal embedding.

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                                                        The continuous homomorphism given by the diagonal embedding.

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                                                          @[simp]
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                                                          theorem ContinuousMonoidHom.diag_toFun (A : Type u_2) [Monoid A] [TopologicalSpace A] (i : A) :
                                                          (ContinuousMonoidHom.diag A) i = ((ContinuousMonoidHom.id A).toMonoidHom i, (ContinuousMonoidHom.id A).toMonoidHom i)

                                                          The continuous homomorphism given by swapping components.

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                                                            The continuous homomorphism given by swapping components.

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                                                              @[simp]
                                                              theorem ContinuousAddMonoidHom.swap_toFun (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] (i : A × B) :
                                                              (ContinuousAddMonoidHom.swap A B) i = ((ContinuousAddMonoidHom.snd A B).toAddMonoidHom i, (ContinuousAddMonoidHom.fst A B).toAddMonoidHom i)
                                                              @[simp]
                                                              theorem ContinuousMonoidHom.swap_toFun (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] (i : A × B) :
                                                              (ContinuousMonoidHom.swap A B) i = ((ContinuousMonoidHom.snd A B).toMonoidHom i, (ContinuousMonoidHom.fst A B).toMonoidHom i)

                                                              The continuous homomorphism given by multiplication.

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                                                                The continuous homomorphism given by addition.

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                                                                  @[simp]
                                                                  theorem ContinuousMonoidHom.mul_toFun (E : Type u_6) [CommGroup E] [TopologicalSpace E] [TopologicalGroup E] (a✝ : E × E) :
                                                                  (ContinuousMonoidHom.mul E) a✝ = a✝.1 * a✝.2
                                                                  @[simp]

                                                                  The continuous homomorphism given by inversion.

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                                                                    The continuous homomorphism given by negation.

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                                                                      Coproduct of two continuous homomorphisms to the same space.

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                                                                        Coproduct of two continuous homomorphisms to the same space.

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                                                                          @[simp]
                                                                          theorem ContinuousAddMonoidHom.coprod_toFun {A : Type u_2} {B : Type u_3} {E : Type u_6} [AddMonoid A] [AddMonoid B] [AddCommGroup E] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace E] [TopologicalAddGroup E] (f : ContinuousAddMonoidHom A E) (g : ContinuousAddMonoidHom B E) (a✝ : A × B) :
                                                                          (f.coprod g) a✝ = (ContinuousAddMonoidHom.add E).toAddMonoidHom ((f.prodMap g).toAddMonoidHom a✝)
                                                                          @[simp]
                                                                          theorem ContinuousMonoidHom.coprod_toFun {A : Type u_2} {B : Type u_3} {E : Type u_6} [Monoid A] [Monoid B] [CommGroup E] [TopologicalSpace A] [TopologicalSpace B] [TopologicalSpace E] [TopologicalGroup E] (f : ContinuousMonoidHom A E) (g : ContinuousMonoidHom B E) (a✝ : A × B) :
                                                                          (f.coprod g) a✝ = (ContinuousMonoidHom.mul E).toMonoidHom ((f.prodMap g).toMonoidHom a✝)
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                                                                          Equations
                                                                          • ContinuousMonoidHom.instTopologicalSpace = TopologicalSpace.induced ContinuousMonoidHom.toContinuousMap ContinuousMap.compactOpen
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                                                                          • ContinuousAddMonoidHom.instTopologicalSpace = TopologicalSpace.induced ContinuousAddMonoidHom.toContinuousMap ContinuousMap.compactOpen
                                                                          theorem ContinuousMonoidHom.isInducing_toContinuousMap (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Topology.IsInducing ContinuousMonoidHom.toContinuousMap
                                                                          theorem ContinuousAddMonoidHom.isInducing_toContinuousMap (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Topology.IsInducing ContinuousAddMonoidHom.toContinuousMap
                                                                          @[deprecated ContinuousMonoidHom.isInducing_toContinuousMap]
                                                                          theorem ContinuousMonoidHom.inducing_toContinuousMap (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Topology.IsInducing ContinuousMonoidHom.toContinuousMap

                                                                          Alias of ContinuousMonoidHom.isInducing_toContinuousMap.

                                                                          theorem ContinuousMonoidHom.isEmbedding_toContinuousMap (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Topology.IsEmbedding ContinuousMonoidHom.toContinuousMap
                                                                          theorem ContinuousAddMonoidHom.isEmbedding_toContinuousMap (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Topology.IsEmbedding ContinuousAddMonoidHom.toContinuousMap
                                                                          @[deprecated ContinuousMonoidHom.isEmbedding_toContinuousMap]
                                                                          theorem ContinuousMonoidHom.embedding_toContinuousMap (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Topology.IsEmbedding ContinuousMonoidHom.toContinuousMap

                                                                          Alias of ContinuousMonoidHom.isEmbedding_toContinuousMap.

                                                                          theorem ContinuousMonoidHom.range_toContinuousMap (A : Type u_2) (B : Type u_3) [Monoid A] [Monoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Set.range ContinuousMonoidHom.toContinuousMap = {f : C(A, B) | f 1 = 1 ∀ (x y : A), f (x * y) = f x * f y}
                                                                          theorem ContinuousAddMonoidHom.range_toContinuousMap (A : Type u_2) (B : Type u_3) [AddMonoid A] [AddMonoid B] [TopologicalSpace A] [TopologicalSpace B] :
                                                                          Set.range ContinuousAddMonoidHom.toContinuousMap = {f : C(A, B) | f 0 = 0 ∀ (x y : A), f (x + y) = f x + f y}
                                                                          @[deprecated ContinuousMonoidHom.isClosedEmbedding_toContinuousMap]

                                                                          Alias of ContinuousMonoidHom.isClosedEmbedding_toContinuousMap.

                                                                          theorem ContinuousMonoidHom.continuous_of_continuous_uncurry {B : Type u_3} {C : Type u_4} [Monoid B] [Monoid C] [TopologicalSpace B] [TopologicalSpace C] {A : Type u_7} [TopologicalSpace A] (f : AContinuousMonoidHom B C) (h : Continuous (Function.uncurry fun (x : A) (y : B) => (f x) y)) :

                                                                          ContinuousMonoidHom _ f is a functor.

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                                                                            ContinuousAddMonoidHom _ f is a functor.

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                                                                              ContinuousMonoidHom f _ is a functor.

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                                                                                ContinuousAddMonoidHom f _ is a functor.

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                                                                                  theorem ContinuousMonoidHom.locallyCompactSpace_of_equicontinuousAt {X : Type u_7} {Y : Type u_8} [TopologicalSpace X] [Group X] [TopologicalGroup X] [UniformSpace Y] [CommGroup Y] [UniformGroup Y] [T0Space Y] [CompactSpace Y] (U : Set X) (V : Set Y) (hU : IsCompact U) (hV : V nhds 1) (h : EquicontinuousAt (fun (f : {f : X →* Y | Set.MapsTo (⇑f) U V}) => f) 1) :
                                                                                  theorem ContinuousAddMonoidHom.locallyCompactSpace_of_equicontinuousAt {X : Type u_7} {Y : Type u_8} [TopologicalSpace X] [AddGroup X] [TopologicalAddGroup X] [UniformSpace Y] [AddCommGroup Y] [UniformAddGroup Y] [T0Space Y] [CompactSpace Y] (U : Set X) (V : Set Y) (hU : IsCompact U) (hV : V nhds 0) (h : EquicontinuousAt (fun (f : {f : X →+ Y | Set.MapsTo (⇑f) U V}) => f) 0) :
                                                                                  theorem ContinuousMonoidHom.locallyCompactSpace_of_hasBasis {X : Type u_7} {Y : Type u_8} [TopologicalSpace X] [Group X] [TopologicalGroup X] [UniformSpace Y] [CommGroup Y] [UniformGroup Y] [T0Space Y] [CompactSpace Y] [LocallyCompactSpace X] (V : Set Y) (hV : ∀ {n : } {x : Y}, x V nx * x V nx V (n + 1)) (hVo : (nhds 1).HasBasis (fun (x : ) => True) V) :
                                                                                  theorem ContinuousAddMonoidHom.locallyCompactSpace_of_hasBasis {X : Type u_7} {Y : Type u_8} [TopologicalSpace X] [AddGroup X] [TopologicalAddGroup X] [UniformSpace Y] [AddCommGroup Y] [UniformAddGroup Y] [T0Space Y] [CompactSpace Y] [LocallyCompactSpace X] (V : Set Y) (hV : ∀ {n : } {x : Y}, x V nx + x V nx V (n + 1)) (hVo : (nhds 0).HasBasis (fun (x : ) => True) V) :