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| Mirrors > Home > HSE Home > Th. List > cdj3lem2 | Structured version Visualization version GIF version | ||
| Description: Lemma for cdj3i 32377. Value of the first-component function 𝑆. (Contributed by NM, 23-May-2005.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| cdj3lem2.1 | ⊢ 𝐴 ∈ Sℋ |
| cdj3lem2.2 | ⊢ 𝐵 ∈ Sℋ |
| cdj3lem2.3 | ⊢ 𝑆 = (𝑥 ∈ (𝐴 +ℋ 𝐵) ↦ (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤))) |
| Ref | Expression |
|---|---|
| cdj3lem2 | ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑆‘(𝐶 +ℎ 𝐷)) = 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cdj3lem2.1 | . . . . 5 ⊢ 𝐴 ∈ Sℋ | |
| 2 | cdj3lem2.2 | . . . . 5 ⊢ 𝐵 ∈ Sℋ | |
| 3 | 1, 2 | shsvai 31300 | . . . 4 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵) → (𝐶 +ℎ 𝐷) ∈ (𝐴 +ℋ 𝐵)) |
| 4 | eqeq1 2734 | . . . . . . 7 ⊢ (𝑥 = (𝐶 +ℎ 𝐷) → (𝑥 = (𝑧 +ℎ 𝑤) ↔ (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) | |
| 5 | 4 | rexbidv 3158 | . . . . . 6 ⊢ (𝑥 = (𝐶 +ℎ 𝐷) → (∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤) ↔ ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) |
| 6 | 5 | riotabidv 7349 | . . . . 5 ⊢ (𝑥 = (𝐶 +ℎ 𝐷) → (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤)) = (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) |
| 7 | cdj3lem2.3 | . . . . 5 ⊢ 𝑆 = (𝑥 ∈ (𝐴 +ℋ 𝐵) ↦ (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤))) | |
| 8 | riotaex 7351 | . . . . 5 ⊢ (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) ∈ V | |
| 9 | 6, 7, 8 | fvmpt 6971 | . . . 4 ⊢ ((𝐶 +ℎ 𝐷) ∈ (𝐴 +ℋ 𝐵) → (𝑆‘(𝐶 +ℎ 𝐷)) = (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) |
| 10 | 3, 9 | syl 17 | . . 3 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵) → (𝑆‘(𝐶 +ℎ 𝐷)) = (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) |
| 11 | 10 | 3adant3 1132 | . 2 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑆‘(𝐶 +ℎ 𝐷)) = (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) |
| 12 | eqid 2730 | . . . . 5 ⊢ (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝐷) | |
| 13 | oveq2 7398 | . . . . . 6 ⊢ (𝑤 = 𝐷 → (𝐶 +ℎ 𝑤) = (𝐶 +ℎ 𝐷)) | |
| 14 | 13 | rspceeqv 3614 | . . . . 5 ⊢ ((𝐷 ∈ 𝐵 ∧ (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝐷)) → ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤)) |
| 15 | 12, 14 | mpan2 691 | . . . 4 ⊢ (𝐷 ∈ 𝐵 → ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤)) |
| 16 | 15 | 3ad2ant2 1134 | . . 3 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤)) |
| 17 | simp1 1136 | . . . 4 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → 𝐶 ∈ 𝐴) | |
| 18 | 1, 2 | cdjreui 32368 | . . . . 5 ⊢ (((𝐶 +ℎ 𝐷) ∈ (𝐴 +ℋ 𝐵) ∧ (𝐴 ∩ 𝐵) = 0ℋ) → ∃!𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) |
| 19 | 3, 18 | stoic3 1776 | . . . 4 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → ∃!𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) |
| 20 | oveq1 7397 | . . . . . . 7 ⊢ (𝑧 = 𝐶 → (𝑧 +ℎ 𝑤) = (𝐶 +ℎ 𝑤)) | |
| 21 | 20 | eqeq2d 2741 | . . . . . 6 ⊢ (𝑧 = 𝐶 → ((𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤) ↔ (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤))) |
| 22 | 21 | rexbidv 3158 | . . . . 5 ⊢ (𝑧 = 𝐶 → (∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤) ↔ ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤))) |
| 23 | 22 | riota2 7372 | . . . 4 ⊢ ((𝐶 ∈ 𝐴 ∧ ∃!𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) → (∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤) ↔ (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) = 𝐶)) |
| 24 | 17, 19, 23 | syl2anc 584 | . . 3 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤) ↔ (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) = 𝐶)) |
| 25 | 16, 24 | mpbid 232 | . 2 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) = 𝐶) |
| 26 | 11, 25 | eqtrd 2765 | 1 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑆‘(𝐶 +ℎ 𝐷)) = 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2109 ∃wrex 3054 ∃!wreu 3354 ∩ cin 3916 ↦ cmpt 5191 ‘cfv 6514 ℩crio 7346 (class class class)co 7390 +ℎ cva 30856 Sℋ csh 30864 +ℋ cph 30867 0ℋc0h 30871 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5237 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 ax-hilex 30935 ax-hfvadd 30936 ax-hvcom 30937 ax-hvass 30938 ax-hv0cl 30939 ax-hvaddid 30940 ax-hfvmul 30941 ax-hvmulid 30942 ax-hvmulass 30943 ax-hvdistr1 30944 ax-hvdistr2 30945 ax-hvmul0 30946 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3757 df-csb 3866 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-iun 4960 df-br 5111 df-opab 5173 df-mpt 5192 df-id 5536 df-po 5549 df-so 5550 df-xp 5647 df-rel 5648 df-cnv 5649 df-co 5650 df-dm 5651 df-rn 5652 df-res 5653 df-ima 5654 df-iota 6467 df-fun 6516 df-fn 6517 df-f 6518 df-f1 6519 df-fo 6520 df-f1o 6521 df-fv 6522 df-riota 7347 df-ov 7393 df-oprab 7394 df-mpo 7395 df-er 8674 df-en 8922 df-dom 8923 df-sdom 8924 df-pnf 11217 df-mnf 11218 df-xr 11219 df-ltxr 11220 df-le 11221 df-sub 11414 df-neg 11415 df-div 11843 df-grpo 30429 df-ablo 30481 df-hvsub 30907 df-sh 31143 df-ch0 31189 df-shs 31244 |
| This theorem is referenced by: cdj3lem2a 32372 cdj3lem2b 32373 cdj3lem3 32374 cdj3i 32377 |
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