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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 22752 | . . 3 ⊢ (𝑆 NGHom 𝑇) = (◡𝑁 “ ℝ) |
3 | 2 | eleq2i 2840 | . 2 ⊢ (𝐹 ∈ (𝑆 NGHom 𝑇) ↔ 𝐹 ∈ (◡𝑁 “ ℝ)) |
4 | n0i 4065 | . . . 4 ⊢ (𝐹 ∈ (◡𝑁 “ ℝ) → ¬ (◡𝑁 “ ℝ) = ∅) | |
5 | nmoffn 22741 | . . . . . . . . . . 11 ⊢ normOp Fn (NrmGrp × NrmGrp) | |
6 | fndm 6129 | . . . . . . . . . . 11 ⊢ ( normOp Fn (NrmGrp × NrmGrp) → dom normOp = (NrmGrp × NrmGrp)) | |
7 | 5, 6 | ax-mp 5 | . . . . . . . . . 10 ⊢ dom normOp = (NrmGrp × NrmGrp) |
8 | 7 | ndmov 6963 | . . . . . . . . 9 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → (𝑆 normOp 𝑇) = ∅) |
9 | 1, 8 | syl5eq 2815 | . . . . . . . 8 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → 𝑁 = ∅) |
10 | 9 | cnveqd 5435 | . . . . . . 7 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → ◡𝑁 = ◡∅) |
11 | cnv0 5675 | . . . . . . 7 ⊢ ◡∅ = ∅ | |
12 | 10, 11 | syl6eq 2819 | . . . . . 6 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → ◡𝑁 = ∅) |
13 | 12 | imaeq1d 5605 | . . . . 5 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → (◡𝑁 “ ℝ) = (∅ “ ℝ)) |
14 | 0ima 5622 | . . . . 5 ⊢ (∅ “ ℝ) = ∅ | |
15 | 13, 14 | syl6eq 2819 | . . . 4 ⊢ (¬ (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → (◡𝑁 “ ℝ) = ∅) |
16 | 4, 15 | nsyl2 144 | . . 3 ⊢ (𝐹 ∈ (◡𝑁 “ ℝ) → (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp)) |
17 | 1 | nmof 22749 | . . . 4 ⊢ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) → 𝑁:(𝑆 GrpHom 𝑇)⟶ℝ*) |
18 | ffn 6184 | . . . 4 ⊢ (𝑁:(𝑆 GrpHom 𝑇)⟶ℝ* → 𝑁 Fn (𝑆 GrpHom 𝑇)) | |
19 | elpreima 6479 | . . . 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 674 | . 2 ⊢ (𝐹 ∈ (◡𝑁 “ ℝ) ↔ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp) ∧ (𝐹 ∈ (𝑆 GrpHom 𝑇) ∧ (𝑁‘𝐹) ∈ ℝ))) |
22 | 3, 21 | bitri 264 | 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 196 ∧ wa 383 = wceq 1629 ∈ wcel 2143 ∅c0 4060 × cxp 5246 ◡ccnv 5247 dom cdm 5248 “ cima 5251 Fn wfn 6025 ⟶wf 6026 ‘cfv 6030 (class class class)co 6791 ℝcr 10135 ℝ*cxr 10273 GrpHom cghm 17871 NrmGrpcngp 22608 normOp cnmo 22735 NGHom cnghm 22736 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1868 ax-4 1883 ax-5 1989 ax-6 2055 ax-7 2091 ax-8 2145 ax-9 2152 ax-10 2172 ax-11 2188 ax-12 2201 ax-13 2406 ax-ext 2749 ax-sep 4911 ax-nul 4919 ax-pow 4970 ax-pr 5033 ax-un 7094 ax-cnex 10192 ax-resscn 10193 ax-1cn 10194 ax-icn 10195 ax-addcl 10196 ax-addrcl 10197 ax-mulcl 10198 ax-mulrcl 10199 ax-mulcom 10200 ax-addass 10201 ax-mulass 10202 ax-distr 10203 ax-i2m1 10204 ax-1ne0 10205 ax-1rid 10206 ax-rnegex 10207 ax-rrecex 10208 ax-cnre 10209 ax-pre-lttri 10210 ax-pre-lttrn 10211 ax-pre-ltadd 10212 ax-pre-mulgt0 10213 ax-pre-sup 10214 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3or 1070 df-3an 1071 df-tru 1632 df-ex 1851 df-nf 1856 df-sb 2048 df-eu 2620 df-mo 2621 df-clab 2756 df-cleq 2762 df-clel 2765 df-nfc 2900 df-ne 2942 df-nel 3045 df-ral 3064 df-rex 3065 df-reu 3066 df-rmo 3067 df-rab 3068 df-v 3350 df-sbc 3585 df-csb 3680 df-dif 3723 df-un 3725 df-in 3727 df-ss 3734 df-nul 4061 df-if 4223 df-pw 4296 df-sn 4314 df-pr 4316 df-op 4320 df-uni 4572 df-iun 4653 df-br 4784 df-opab 4844 df-mpt 4861 df-id 5156 df-po 5169 df-so 5170 df-xp 5254 df-rel 5255 df-cnv 5256 df-co 5257 df-dm 5258 df-rn 5259 df-res 5260 df-ima 5261 df-iota 5993 df-fun 6032 df-fn 6033 df-f 6034 df-f1 6035 df-fo 6036 df-f1o 6037 df-fv 6038 df-riota 6752 df-ov 6794 df-oprab 6795 df-mpt2 6796 df-1st 7313 df-2nd 7314 df-er 7894 df-en 8108 df-dom 8109 df-sdom 8110 df-sup 8502 df-inf 8503 df-pnf 10276 df-mnf 10277 df-xr 10278 df-ltxr 10279 df-le 10280 df-sub 10468 df-neg 10469 df-ico 12385 df-nmo 22738 df-nghm 22739 |
This theorem is referenced by: isnghm2 22754 nghmcl 22757 nmoi 22758 nghmrcl1 22762 nghmrcl2 22763 nghmghm 22764 isnmhm2 22782 |
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