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| Mirrors > Home > HSE Home > Th. List > cvmdi | Structured version Visualization version GIF version | ||
| Description: The covering property implies the modular pair property. Lemma 7.5.1 of [MaedaMaeda] p. 31. (Contributed by NM, 16-Jun-2004.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| mdsl.1 | ⊢ 𝐴 ∈ Cℋ |
| mdsl.2 | ⊢ 𝐵 ∈ Cℋ |
| Ref | Expression |
|---|---|
| cvmdi | ⊢ ((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 → 𝐴 𝑀ℋ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | anass 474 | . . . . . 6 ⊢ ((((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) ∧ 𝑥 ⊆ 𝐵) ↔ ((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ (𝑥 ⊆ (𝐴 ∨ℋ 𝐵) ∧ 𝑥 ⊆ 𝐵))) | |
| 2 | mdsl.2 | . . . . . . . . . 10 ⊢ 𝐵 ∈ Cℋ | |
| 3 | mdsl.1 | . . . . . . . . . 10 ⊢ 𝐴 ∈ Cℋ | |
| 4 | 2, 3 | chub2i 32054 | . . . . . . . . 9 ⊢ 𝐵 ⊆ (𝐴 ∨ℋ 𝐵) |
| 5 | sstr 3939 | . . . . . . . . 9 ⊢ ((𝑥 ⊆ 𝐵 ∧ 𝐵 ⊆ (𝐴 ∨ℋ 𝐵)) → 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) | |
| 6 | 4, 5 | mpan2 704 | . . . . . . . 8 ⊢ (𝑥 ⊆ 𝐵 → 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) |
| 7 | 6 | pm4.71ri 570 | . . . . . . 7 ⊢ (𝑥 ⊆ 𝐵 ↔ (𝑥 ⊆ (𝐴 ∨ℋ 𝐵) ∧ 𝑥 ⊆ 𝐵)) |
| 8 | 7 | anbi2i 635 | . . . . . 6 ⊢ (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ 𝐵) ↔ ((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ (𝑥 ⊆ (𝐴 ∨ℋ 𝐵) ∧ 𝑥 ⊆ 𝐵))) |
| 9 | 1, 8 | bitr4i 281 | . . . . 5 ⊢ ((((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) ∧ 𝑥 ⊆ 𝐵) ↔ ((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ 𝐵)) |
| 10 | 3, 2 | chincli 32044 | . . . . . . . 8 ⊢ (𝐴 ∩ 𝐵) ∈ Cℋ |
| 11 | cvnbtwn4 32873 | . . . . . . . 8 ⊢ (((𝐴 ∩ 𝐵) ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝑥 ∈ Cℋ ) → ((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 → (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ 𝐵) → (𝑥 = (𝐴 ∩ 𝐵) ∨ 𝑥 = 𝐵)))) | |
| 12 | 10, 2, 11 | mp3an12 1480 | . . . . . . 7 ⊢ (𝑥 ∈ Cℋ → ((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 → (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ 𝐵) → (𝑥 = (𝐴 ∩ 𝐵) ∨ 𝑥 = 𝐵)))) |
| 13 | 12 | impcom 413 | . . . . . 6 ⊢ (((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 ∧ 𝑥 ∈ Cℋ ) → (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ 𝐵) → (𝑥 = (𝐴 ∩ 𝐵) ∨ 𝑥 = 𝐵))) |
| 14 | 10, 3 | chjcomi 32052 | . . . . . . . . . . 11 ⊢ ((𝐴 ∩ 𝐵) ∨ℋ 𝐴) = (𝐴 ∨ℋ (𝐴 ∩ 𝐵)) |
| 15 | 3, 2 | chabs1i 32102 | . . . . . . . . . . 11 ⊢ (𝐴 ∨ℋ (𝐴 ∩ 𝐵)) = 𝐴 |
| 16 | 14, 15 | eqtri 2784 | . . . . . . . . . 10 ⊢ ((𝐴 ∩ 𝐵) ∨ℋ 𝐴) = 𝐴 |
| 17 | 16 | ineq1i 4162 | . . . . . . . . 9 ⊢ (((𝐴 ∩ 𝐵) ∨ℋ 𝐴) ∩ 𝐵) = (𝐴 ∩ 𝐵) |
| 18 | 10 | chjidmi 32105 | . . . . . . . . 9 ⊢ ((𝐴 ∩ 𝐵) ∨ℋ (𝐴 ∩ 𝐵)) = (𝐴 ∩ 𝐵) |
| 19 | 17, 18 | eqtr4i 2787 | . . . . . . . 8 ⊢ (((𝐴 ∩ 𝐵) ∨ℋ 𝐴) ∩ 𝐵) = ((𝐴 ∩ 𝐵) ∨ℋ (𝐴 ∩ 𝐵)) |
| 20 | oveq1 7419 | . . . . . . . . 9 ⊢ (𝑥 = (𝐴 ∩ 𝐵) → (𝑥 ∨ℋ 𝐴) = ((𝐴 ∩ 𝐵) ∨ℋ 𝐴)) | |
| 21 | 20 | ineq1d 4165 | . . . . . . . 8 ⊢ (𝑥 = (𝐴 ∩ 𝐵) → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (((𝐴 ∩ 𝐵) ∨ℋ 𝐴) ∩ 𝐵)) |
| 22 | oveq1 7419 | . . . . . . . 8 ⊢ (𝑥 = (𝐴 ∩ 𝐵) → (𝑥 ∨ℋ (𝐴 ∩ 𝐵)) = ((𝐴 ∩ 𝐵) ∨ℋ (𝐴 ∩ 𝐵))) | |
| 23 | 19, 21, 22 | 3eqtr4a 2822 | . . . . . . 7 ⊢ (𝑥 = (𝐴 ∩ 𝐵) → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵))) |
| 24 | incom 4155 | . . . . . . . . 9 ⊢ ((𝐵 ∨ℋ 𝐴) ∩ 𝐵) = (𝐵 ∩ (𝐵 ∨ℋ 𝐴)) | |
| 25 | 2, 3 | chabs2i 32103 | . . . . . . . . . 10 ⊢ (𝐵 ∩ (𝐵 ∨ℋ 𝐴)) = 𝐵 |
| 26 | 2, 3 | chabs1i 32102 | . . . . . . . . . 10 ⊢ (𝐵 ∨ℋ (𝐵 ∩ 𝐴)) = 𝐵 |
| 27 | incom 4155 | . . . . . . . . . . 11 ⊢ (𝐵 ∩ 𝐴) = (𝐴 ∩ 𝐵) | |
| 28 | 27 | oveq2i 7423 | . . . . . . . . . 10 ⊢ (𝐵 ∨ℋ (𝐵 ∩ 𝐴)) = (𝐵 ∨ℋ (𝐴 ∩ 𝐵)) |
| 29 | 25, 26, 28 | 3eqtr2i 2790 | . . . . . . . . 9 ⊢ (𝐵 ∩ (𝐵 ∨ℋ 𝐴)) = (𝐵 ∨ℋ (𝐴 ∩ 𝐵)) |
| 30 | 24, 29 | eqtri 2784 | . . . . . . . 8 ⊢ ((𝐵 ∨ℋ 𝐴) ∩ 𝐵) = (𝐵 ∨ℋ (𝐴 ∩ 𝐵)) |
| 31 | oveq1 7419 | . . . . . . . . 9 ⊢ (𝑥 = 𝐵 → (𝑥 ∨ℋ 𝐴) = (𝐵 ∨ℋ 𝐴)) | |
| 32 | 31 | ineq1d 4165 | . . . . . . . 8 ⊢ (𝑥 = 𝐵 → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = ((𝐵 ∨ℋ 𝐴) ∩ 𝐵)) |
| 33 | oveq1 7419 | . . . . . . . 8 ⊢ (𝑥 = 𝐵 → (𝑥 ∨ℋ (𝐴 ∩ 𝐵)) = (𝐵 ∨ℋ (𝐴 ∩ 𝐵))) | |
| 34 | 30, 32, 33 | 3eqtr4a 2822 | . . . . . . 7 ⊢ (𝑥 = 𝐵 → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵))) |
| 35 | 23, 34 | jaoi 871 | . . . . . 6 ⊢ ((𝑥 = (𝐴 ∩ 𝐵) ∨ 𝑥 = 𝐵) → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵))) |
| 36 | 13, 35 | syl6 36 | . . . . 5 ⊢ (((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 ∧ 𝑥 ∈ Cℋ ) → (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ 𝐵) → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵)))) |
| 37 | 9, 36 | biimtrid 245 | . . . 4 ⊢ (((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 ∧ 𝑥 ∈ Cℋ ) → ((((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) ∧ 𝑥 ⊆ 𝐵) → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵)))) |
| 38 | 37 | exp4b 436 | . . 3 ⊢ ((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 → (𝑥 ∈ Cℋ → (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) → (𝑥 ⊆ 𝐵 → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵)))))) |
| 39 | 38 | ralrimiv 3154 | . 2 ⊢ ((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 → ∀𝑥 ∈ Cℋ (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) → (𝑥 ⊆ 𝐵 → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵))))) |
| 40 | 3, 2 | mdsl1i 32905 | . 2 ⊢ (∀𝑥 ∈ Cℋ (((𝐴 ∩ 𝐵) ⊆ 𝑥 ∧ 𝑥 ⊆ (𝐴 ∨ℋ 𝐵)) → (𝑥 ⊆ 𝐵 → ((𝑥 ∨ℋ 𝐴) ∩ 𝐵) = (𝑥 ∨ℋ (𝐴 ∩ 𝐵)))) ↔ 𝐴 𝑀ℋ 𝐵) |
| 41 | 39, 40 | sylib 221 | 1 ⊢ ((𝐴 ∩ 𝐵) ⋖ℋ 𝐵 → 𝐴 𝑀ℋ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∨ wo 861 = wceq 1570 ∈ wcel 2145 ∀wral 3077 ∩ cin 3898 ⊆ wss 3899 class class class wbr 5103 (class class class)co 7412 Cℋ cch 31513 ∨ℋ chj 31517 ⋖ℋ ccv 31548 𝑀ℋ cmd 31550 |
| 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 7740 ax-inf2 9626 ax-cc 10494 ax-cnex 11237 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 ax-pre-sup 11259 ax-addf 11260 ax-mulf 11261 ax-hilex 31583 ax-hfvadd 31584 ax-hvcom 31585 ax-hvass 31586 ax-hv0cl 31587 ax-hvaddid 31588 ax-hfvmul 31589 ax-hvmulid 31590 ax-hvmulass 31591 ax-hvdistr1 31592 ax-hvdistr2 31593 ax-hvmul0 31594 ax-hfi 31663 ax-his1 31666 ax-his2 31667 ax-his3 31668 ax-his4 31669 ax-hcompl 31786 |
| 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-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-iin 4954 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-se 5605 df-we 5606 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-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-isom 6540 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-of 7682 df-om 7867 df-1st 7990 df-2nd 7991 df-supp 8162 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-1o 8460 df-2o 8461 df-oadd 8464 df-omul 8465 df-er 8701 df-map 8833 df-pm 8834 df-ixp 8910 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-fsupp 9338 df-fi 9387 df-sup 9418 df-inf 9419 df-oi 9488 df-card 10001 df-acn 10004 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-div 11955 df-nn 12317 df-2 12386 df-3 12387 df-4 12388 df-5 12389 df-6 12390 df-7 12391 df-8 12392 df-9 12393 df-n0 12588 df-z 12675 df-dec 12796 df-uz 12947 df-q 13057 df-rp 13102 df-xneg 13222 df-xadd 13223 df-xmul 13224 df-ioo 13461 df-ico 13463 df-icc 13464 df-fz 13621 df-fzo 13769 df-fl 13912 df-seq 14125 df-exp 14185 df-hash 14455 df-cj 15246 df-re 15247 df-im 15248 df-sqrt 15382 df-abs 15383 df-clim 15635 df-rlim 15636 df-sum 15834 df-struct 17305 df-sets 17322 df-slot 17340 df-ndx 17352 df-base 17368 df-ress 17389 df-plusg 17421 df-mulr 17422 df-starv 17423 df-sca 17424 df-vsca 17425 df-ip 17426 df-tset 17427 df-ple 17428 df-ds 17430 df-unif 17431 df-hom 17432 df-cco 17433 df-rest 17573 df-topn 17574 df-0g 17592 df-gsum 17593 df-topgen 17594 df-pt 17595 df-prds 17598 df-xrs 17654 df-qtop 17659 df-imas 17660 df-xps 17662 df-mre 17736 df-mrc 17737 df-acs 17739 df-mgm 18796 df-sgrp 18888 df-mnd 18904 df-submnd 18959 df-mulg 19258 df-cntz 19511 df-cmn 19976 df-psmet 21650 df-xmet 21651 df-met 21652 df-bl 21653 df-mopn 21654 df-fbas 21655 df-fg 21656 df-cnfld 21659 df-top 23192 df-topon 23209 df-topsp 23231 df-bases 23244 df-cld 23317 df-ntr 23318 df-cls 23319 df-nei 23396 df-cn 23525 df-cnp 23526 df-lm 23527 df-haus 23613 df-tx 23861 df-hmeo 24054 df-fil 24145 df-fm 24237 df-flim 24238 df-flf 24239 df-xms 24619 df-ms 24620 df-tms 24621 df-cfil 25556 df-cau 25557 df-cmet 25558 df-grpo 31077 df-gid 31078 df-ginv 31079 df-gdiv 31080 df-ablo 31129 df-vc 31143 df-nv 31176 df-va 31179 df-ba 31180 df-sm 31181 df-0v 31182 df-vs 31183 df-nmcv 31184 df-ims 31185 df-dip 31285 df-ssp 31306 df-ph 31397 df-cbn 31447 df-hnorm 31552 df-hba 31553 df-hvsub 31555 df-hlim 31556 df-hcau 31557 df-sh 31791 df-ch 31805 df-oc 31836 df-ch0 31837 df-shs 31892 df-chj 31894 df-cv 32863 df-md 32864 |
| This theorem is used by: cvmd 32920 |
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