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Mirrors > Home > MPE Home > Th. List > isnghm | Structured version Visualization version GIF version |
Description: A normed group homomorphism is a group homomorphism with bounded norm. (Contributed by Mario Carneiro, 18-Oct-2015.) |
Ref | Expression |
---|---|
nmofval.1 | ⊢ 𝑁 = (𝑆 normOp 𝑇) |
Ref | Expression |
---|---|
isnghm | ⊢ (𝐹 ∈ (𝑆 NGHom 𝑇) ↔ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) ∧ (𝐹 ∈ (𝑆 GrpHom 𝑇) ∧ (𝑁‘𝐹) ∈ ℝ))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nmofval.1 | . . . 4 ⊢ 𝑁 = (𝑆 normOp 𝑇) | |
2 | 1 | nghmfval 22336 | . . 3 ⊢ (𝑆 NGHom 𝑇) = (◡𝑁 “ ℝ) |
3 | 2 | eleq2i 2680 | . 2 ⊢ (𝐹 ∈ (𝑆 NGHom 𝑇) ↔ 𝐹 ∈ (◡𝑁 “ ℝ)) |
4 | n0i 3879 | . . . 4 ⊢ (𝐹 ∈ (◡𝑁 “ ℝ) → ¬ (◡𝑁 “ ℝ) = ∅) | |
5 | nmoffn 22325 | . . . . . . . . . . 11 ⊢ normOp Fn (NrmGrp × NrmGrp) | |
6 | fndm 5904 | . . . . . . . . . . 11 ⊢ ( normOp Fn (NrmGrp × NrmGrp) → dom normOp = (NrmGrp × NrmGrp)) | |
7 | 5, 6 | ax-mp 5 | . . . . . . . . . 10 ⊢ dom normOp = (NrmGrp × NrmGrp) |
8 | 7 | ndmov 6716 | . . . . . . . . 9 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → (𝑆 normOp 𝑇) = ∅) |
9 | 1, 8 | syl5eq 2656 | . . . . . . . 8 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → 𝑁 = ∅) |
10 | 9 | cnveqd 5220 | . . . . . . 7 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → ◡𝑁 = ◡∅) |
11 | cnv0 5454 | . . . . . . 7 ⊢ ◡∅ = ∅ | |
12 | 10, 11 | syl6eq 2660 | . . . . . 6 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → ◡𝑁 = ∅) |
13 | 12 | imaeq1d 5384 | . . . . 5 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → (◡𝑁 “ ℝ) = (∅ “ ℝ)) |
14 | 0ima 5401 | . . . . 5 ⊢ (∅ “ ℝ) = ∅ | |
15 | 13, 14 | syl6eq 2660 | . . . 4 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → (◡𝑁 “ ℝ) = ∅) |
16 | 4, 15 | nsyl2 141 | . . 3 ⊢ (𝐹 ∈ (◡𝑁 “ ℝ) → (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp)) |
17 | 1 | nmof 22333 | . . . 4 ⊢ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → 𝑁:(𝑆 GrpHom 𝑇)⟶ℝ*) |
18 | ffn 5958 | . . . 4 ⊢ (𝑁:(𝑆 GrpHom 𝑇)⟶ℝ* → 𝑁 Fn (𝑆 GrpHom 𝑇)) | |
19 | elpreima 6245 | . . . 4 ⊢ (𝑁 Fn (𝑆 GrpHom 𝑇) → (𝐹 ∈ (◡𝑁 “ ℝ) ↔ (𝐹 ∈ (𝑆 GrpHom 𝑇) ∧ (𝑁‘𝐹) ∈ ℝ))) | |
20 | 17, 18, 19 | 3syl 18 | . . 3 ⊢ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → (𝐹 ∈ (◡𝑁 “ ℝ) ↔ (𝐹 ∈ (𝑆 GrpHom 𝑇) ∧ (𝑁‘𝐹) ∈ ℝ))) |
21 | 16, 20 | biadan2 672 | . 2 ⊢ (𝐹 ∈ (◡𝑁 “ ℝ) ↔ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) ∧ (𝐹 ∈ (𝑆 GrpHom 𝑇) ∧ (𝑁‘𝐹) ∈ ℝ))) |
22 | 3, 21 | bitri 263 | 1 ⊢ (𝐹 ∈ (𝑆 NGHom 𝑇) ↔ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) ∧ (𝐹 ∈ (𝑆 GrpHom 𝑇) ∧ (𝑁‘𝐹) ∈ ℝ))) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ∅c0 3874 × cxp 5036 ◡ccnv 5037 dom cdm 5038 “ cima 5041 Fn wfn 5799 ⟶wf 5800 ‘cfv 5804 (class class class)co 6549 ℝcr 9814 ℝ*cxr 9952 GrpHom cghm 17480 NrmGrpcngp 22192 normOp cnmo 22319 NGHom cnghm 22320 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-po 4959 df-so 4960 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-1st 7059 df-2nd 7060 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-sup 8231 df-inf 8232 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-ico 12052 df-nmo 22322 df-nghm 22323 |
This theorem is referenced by: isnghm2 22338 nghmcl 22341 nmoi 22342 nghmrcl1 22346 nghmrcl2 22347 nghmghm 22348 isnmhm2 22366 |
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