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| Mirrors > Home > HSE Home > Th. List > cdj3lem3 | Structured version Visualization version GIF version | ||
| Description: Lemma for cdj3i 33036. 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 4155 | . . . 4 ⊢ (𝐴 ∩ 𝐵) = (𝐵 ∩ 𝐴) | |
| 2 | 1 | eqeq1i 2766 | . . 3 ⊢ ((𝐴 ∩ 𝐵) = 0ℋ ↔ (𝐵 ∩ 𝐴) = 0ℋ) |
| 3 | cdj3lem2.2 | . . . . . . . 8 ⊢ 𝐵 ∈ Sℋ | |
| 4 | 3 | sheli 31809 | . . . . . . 7 ⊢ (𝐷 ∈ 𝐵 → 𝐷 ∈ ℋ) |
| 5 | cdj3lem2.1 | . . . . . . . 8 ⊢ 𝐴 ∈ Sℋ | |
| 6 | 5 | sheli 31809 | . . . . . . 7 ⊢ (𝐶 ∈ 𝐴 → 𝐶 ∈ ℋ) |
| 7 | ax-hvcom 31596 | . . . . . . 7 ⊢ ((𝐷 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐷 +ℎ 𝐶) = (𝐶 +ℎ 𝐷)) | |
| 8 | 4, 6, 7 | syl2an 608 | . . . . . 6 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴) → (𝐷 +ℎ 𝐶) = (𝐶 +ℎ 𝐷)) |
| 9 | 8 | fveq2d 6887 | . . . . 5 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴) → (𝑇‘(𝐷 +ℎ 𝐶)) = (𝑇‘(𝐶 +ℎ 𝐷))) |
| 10 | 9 | 3adant3 1150 | . . . 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 31958 | . . . . . . 7 ⊢ (𝐵 +ℋ 𝐴) = (𝐴 +ℋ 𝐵) |
| 13 | 3 | sheli 31809 | . . . . . . . . . . 11 ⊢ (𝑤 ∈ 𝐵 → 𝑤 ∈ ℋ) |
| 14 | 5 | sheli 31809 | . . . . . . . . . . 11 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ ℋ) |
| 15 | ax-hvcom 31596 | . . . . . . . . . . 11 ⊢ ((𝑤 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (𝑤 +ℎ 𝑧) = (𝑧 +ℎ 𝑤)) | |
| 16 | 13, 14, 15 | syl2an 608 | . . . . . . . . . 10 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑧 ∈ 𝐴) → (𝑤 +ℎ 𝑧) = (𝑧 +ℎ 𝑤)) |
| 17 | 16 | eqeq2d 2772 | . . . . . . . . 9 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑧 ∈ 𝐴) → (𝑥 = (𝑤 +ℎ 𝑧) ↔ 𝑥 = (𝑧 +ℎ 𝑤))) |
| 18 | 17 | rexbidva 3185 | . . . . . . . 8 ⊢ (𝑤 ∈ 𝐵 → (∃𝑧 ∈ 𝐴 𝑥 = (𝑤 +ℎ 𝑧) ↔ ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑤))) |
| 19 | 18 | riotabiia 7395 | . . . . . . 7 ⊢ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑤 +ℎ 𝑧)) = (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑤)) |
| 20 | 12, 19 | mpteq12i 5202 | . . . . . 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 2787 | . . . . 5 ⊢ 𝑇 = (𝑥 ∈ (𝐵 +ℋ 𝐴) ↦ (℩𝑤 ∈ 𝐵 ∃𝑧 ∈ 𝐴 𝑥 = (𝑤 +ℎ 𝑧))) |
| 22 | 3, 5, 21 | cdj3lem2 33030 | . . . 4 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴 ∧ (𝐵 ∩ 𝐴) = 0ℋ) → (𝑇‘(𝐷 +ℎ 𝐶)) = 𝐷) |
| 23 | 10, 22 | eqtr3d 2798 | . . 3 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴 ∧ (𝐵 ∩ 𝐴) = 0ℋ) → (𝑇‘(𝐶 +ℎ 𝐷)) = 𝐷) |
| 24 | 2, 23 | syl3an3b 1432 | . 2 ⊢ ((𝐷 ∈ 𝐵 ∧ 𝐶 ∈ 𝐴 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑇‘(𝐶 +ℎ 𝐷)) = 𝐷) |
| 25 | 24 | 3com12 1141 | 1 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑇‘(𝐶 +ℎ 𝐷)) = 𝐷) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 ∃wrex 3087 ∩ cin 3898 ↦ cmpt 5186 ‘cfv 6537 ℩crio 7374 (class class class)co 7418 ℋchba 31514 +ℎ cva 31515 Sℋ csh 31523 +ℋ cph 31526 0ℋc0h 31530 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 ax-resscn 11250 ax-1cn 11251 ax-icn 11252 ax-addcl 11253 ax-addrcl 11254 ax-mulcl 11255 ax-mulrcl 11256 ax-mulcom 11257 ax-addass 11258 ax-mulass 11259 ax-distr 11260 ax-i2m1 11261 ax-1ne0 11262 ax-1rid 11263 ax-rnegex 11264 ax-rrecex 11265 ax-cnre 11266 ax-pre-lttri 11267 ax-pre-lttrn 11268 ax-pre-ltadd 11269 ax-pre-mulgt0 11270 ax-hilex 31594 ax-hfvadd 31595 ax-hvcom 31596 ax-hvass 31597 ax-hv0cl 31598 ax-hvaddid 31599 ax-hfvmul 31600 ax-hvmulid 31601 ax-hvmulass 31602 ax-hvdistr1 31603 ax-hvdistr2 31604 ax-hvmul0 31605 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7375 df-ov 7421 df-oprab 7422 df-mpo 7423 df-er 8710 df-en 8967 df-dom 8968 df-sdom 8969 df-pnf 11338 df-mnf 11339 df-xr 11340 df-ltxr 11341 df-le 11342 df-sub 11536 df-neg 11537 df-div 11967 df-grpo 31088 df-ablo 31140 df-hvsub 31566 df-sh 31802 df-ch0 31848 df-shs 31903 |
| This theorem is used by: cdj3lem3a 33034 cdj3i 33036 |
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