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Mirrors > Home > HSE Home > Th. List > cdj3lem3 | Structured version Visualization version GIF version |
Description: Lemma for cdj3i 31682. Value of the second-component function 𝑇. (Contributed by NM, 23-May-2005.) (New usage is discouraged.) |
Ref | Expression |
---|---|
cdj3lem2.1 | ⊢ 𝐴 ∈ Sℋ |
cdj3lem2.2 | ⊢ 𝐵 ∈ Sℋ |
cdj3lem3.3 | ⊢ 𝑇 = (𝑥 ∈ (𝐴 +ℋ 𝐵) ↦ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑤))) |
Ref | Expression |
---|---|
cdj3lem3 | ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑇‘(𝐶 +ℎ 𝐷)) = 𝐷) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | incom 4201 | . . . 4 ⊢ (𝐴 ∩ 𝐵) = (𝐵 ∩ 𝐴) | |
2 | 1 | eqeq1i 2738 | . . 3 ⊢ ((𝐴 ∩ 𝐵) = 0ℋ ↔ (𝐵 ∩ 𝐴) = 0ℋ) |
3 | cdj3lem2.2 | . . . . . . . 8 ⊢ 𝐵 ∈ Sℋ | |
4 | 3 | sheli 30455 | . . . . . . 7 ⊢ (𝐷 ∈ 𝐵 → 𝐷 ∈ ℋ) |
5 | cdj3lem2.1 | . . . . . . . 8 ⊢ 𝐴 ∈ Sℋ | |
6 | 5 | sheli 30455 | . . . . . . 7 ⊢ (𝐶 ∈ 𝐴 → 𝐶 ∈ ℋ) |
7 | ax-hvcom 30242 | . . . . . . 7 ⊢ ((𝐷 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐷 +ℎ 𝐶) = (𝐶 +ℎ 𝐷)) | |
8 | 4, 6, 7 | syl2an 597 | . . . . . 6 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴) → (𝐷 +ℎ 𝐶) = (𝐶 +ℎ 𝐷)) |
9 | 8 | fveq2d 6893 | . . . . 5 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴) → (𝑇‘(𝐷 +ℎ 𝐶)) = (𝑇‘(𝐶 +ℎ 𝐷))) |
10 | 9 | 3adant3 1133 | . . . 4 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴 ∧ (𝐵 ∩ 𝐴) = 0ℋ) → (𝑇‘(𝐷 +ℎ 𝐶)) = (𝑇‘(𝐶 +ℎ 𝐷))) |
11 | cdj3lem3.3 | . . . . . 6 ⊢ 𝑇 = (𝑥 ∈ (𝐴 +ℋ 𝐵) ↦ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑤))) | |
12 | 3, 5 | shscomi 30604 | . . . . . . 7 ⊢ (𝐵 +ℋ 𝐴) = (𝐴 +ℋ 𝐵) |
13 | 3 | sheli 30455 | . . . . . . . . . . 11 ⊢ (𝑤 ∈ 𝐵 → 𝑤 ∈ ℋ) |
14 | 5 | sheli 30455 | . . . . . . . . . . 11 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ ℋ) |
15 | ax-hvcom 30242 | . . . . . . . . . . 11 ⊢ ((𝑤 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (𝑤 +ℎ 𝑧) = (𝑧 +ℎ 𝑤)) | |
16 | 13, 14, 15 | syl2an 597 | . . . . . . . . . 10 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑧 ∈ 𝐴) → (𝑤 +ℎ 𝑧) = (𝑧 +ℎ 𝑤)) |
17 | 16 | eqeq2d 2744 | . . . . . . . . 9 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑧 ∈ 𝐴) → (𝑥 = (𝑤 +ℎ 𝑧) ↔ 𝑥 = (𝑧 +ℎ 𝑤))) |
18 | 17 | rexbidva 3177 | . . . . . . . 8 ⊢ (𝑤 ∈ 𝐵 → (∃𝑧 ∈ 𝐴 𝑥 = (𝑤 +ℎ 𝑧) ↔ ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑤))) |
19 | 18 | riotabiia 7383 | . . . . . . 7 ⊢ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑤 +ℎ 𝑧)) = (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑤)) |
20 | 12, 19 | mpteq12i 5254 | . . . . . 6 ⊢ (𝑥 ∈ (𝐵 +ℋ 𝐴) ↦ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑤 +ℎ 𝑧))) = (𝑥 ∈ (𝐴 +ℋ 𝐵) ↦ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑤))) |
21 | 11, 20 | eqtr4i 2764 | . . . . 5 ⊢ 𝑇 = (𝑥 ∈ (𝐵 +ℋ 𝐴) ↦ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑤 +ℎ 𝑧))) |
22 | 3, 5, 21 | cdj3lem2 31676 | . . . 4 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴 ∧ (𝐵 ∩ 𝐴) = 0ℋ) → (𝑇‘(𝐷 +ℎ 𝐶)) = 𝐷) |
23 | 10, 22 | eqtr3d 2775 | . . 3 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴 ∧ (𝐵 ∩ 𝐴) = 0ℋ) → (𝑇‘(𝐶 +ℎ 𝐷)) = 𝐷) |
24 | 2, 23 | syl3an3b 1406 | . 2 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑇‘(𝐶 +ℎ 𝐷)) = 𝐷) |
25 | 24 | 3com12 1124 | 1 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑇‘(𝐶 +ℎ 𝐷)) = 𝐷) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ∃wrex 3071 ∩ cin 3947 ↦ cmpt 5231 ‘cfv 6541 ℩crio 7361 (class class class)co 7406 ℋchba 30160 +ℎ cva 30161 Sℋ csh 30169 +ℋ cph 30172 0ℋc0h 30176 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184 ax-hilex 30240 ax-hfvadd 30241 ax-hvcom 30242 ax-hvass 30243 ax-hv0cl 30244 ax-hvaddid 30245 ax-hfvmul 30246 ax-hvmulid 30247 ax-hvmulass 30248 ax-hvdistr1 30249 ax-hvdistr2 30250 ax-hvmul0 30251 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5574 df-po 5588 df-so 5589 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7362 df-ov 7409 df-oprab 7410 df-mpo 7411 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-div 11869 df-grpo 29734 df-ablo 29786 df-hvsub 30212 df-sh 30448 df-ch0 30494 df-shs 30549 |
This theorem is referenced by: cdj3lem3a 31680 cdj3i 31682 |
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