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| Mirrors > Home > HSE Home > Th. List > cdj3lem2 | Structured version Visualization version GIF version | ||
| Description: Lemma for cdj3i 32641. 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 31564 | . . . 4 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵) → (𝐶 +ℎ 𝐷) ∈ (𝐴 +ℋ 𝐵)) |
| 4 | eqeq1 2766 | . . . . . . 7 ⊢ (𝑥 = (𝐶 +ℎ 𝐷) → (𝑥 = (𝑧 +ℎ 𝑤) ↔ (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) | |
| 5 | 4 | rexbidv 3186 | . . . . . 6 ⊢ (𝑥 = (𝐶 +ℎ 𝐷) → (∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤) ↔ ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) |
| 6 | 5 | riotabidv 7355 | . . . . 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 7357 | . . . . 5 ⊢ (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) ∈ V | |
| 9 | 6, 7, 8 | fvmpt 6975 | . . . 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 1145 | . 2 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑆‘(𝐶 +ℎ 𝐷)) = (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤))) |
| 12 | eqid 2762 | . . . . 5 ⊢ (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝐷) | |
| 13 | oveq2 7404 | . . . . . 6 ⊢ (𝑤 = 𝐷 → (𝐶 +ℎ 𝑤) = (𝐶 +ℎ 𝐷)) | |
| 14 | 13 | rspceeqv 3604 | . . . . 5 ⊢ ((𝐷 ∈ 𝐵 ∧ (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝐷)) → ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤)) |
| 15 | 12, 14 | mpan2 701 | . . . 4 ⊢ (𝐷 ∈ 𝐵 → ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤)) |
| 16 | 15 | 3ad2ant2 1147 | . . 3 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤)) |
| 17 | simp1 1149 | . . . 4 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → 𝐶 ∈ 𝐴) | |
| 18 | 1, 2 | cdjreui 32632 | . . . . 5 ⊢ (((𝐶 +ℎ 𝐷) ∈ (𝐴 +ℋ 𝐵) ∧ (𝐴 ∩ 𝐵) = 0ℋ) → ∃!𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) |
| 19 | 3, 18 | stoic3 1796 | . . . 4 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → ∃!𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) |
| 20 | oveq1 7403 | . . . . . . 7 ⊢ (𝑧 = 𝐶 → (𝑧 +ℎ 𝑤) = (𝐶 +ℎ 𝑤)) | |
| 21 | 20 | eqeq2d 2773 | . . . . . 6 ⊢ (𝑧 = 𝐶 → ((𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤) ↔ (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤))) |
| 22 | 21 | rexbidv 3186 | . . . . 5 ⊢ (𝑧 = 𝐶 → (∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤) ↔ ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝐶 +ℎ 𝑤))) |
| 23 | 22 | riota2 7378 | . . . 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 593 | . . 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 234 | . 2 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (℩𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 (𝐶 +ℎ 𝐷) = (𝑧 +ℎ 𝑤)) = 𝐶) |
| 26 | 11, 25 | eqtrd 2797 | 1 ⊢ ((𝐶 ∈ 𝐴 ∧ 𝐷 ∈ 𝐵 ∧ (𝐴 ∩ 𝐵) = 0ℋ) → (𝑆‘(𝐶 +ℎ 𝐷)) = 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 ∧ w3a 1098 = wceq 1560 ∈ wcel 2142 ∃wrex 3086 ∃!wreu 3365 ∩ cin 3903 ↦ cmpt 5181 ‘cfv 6521 ℩crio 7352 (class class class)co 7396 +ℎ cva 31120 Sℋ csh 31128 +ℋ cph 31131 0ℋc0h 31135 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 ax-hilex 31199 ax-hfvadd 31200 ax-hvcom 31201 ax-hvass 31202 ax-hv0cl 31203 ax-hvaddid 31204 ax-hfvmul 31205 ax-hvmulid 31206 ax-hvmulass 31207 ax-hvdistr1 31208 ax-hvdistr2 31209 ax-hvmul0 31210 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-po 5555 df-so 5556 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-div 11845 df-grpo 30693 df-ablo 30745 df-hvsub 31171 df-sh 31407 df-ch0 31453 df-shs 31508 |
| This theorem is referenced by: cdj3lem2a 32636 cdj3lem2b 32637 cdj3lem3 32638 cdj3i 32641 |
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