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| Mirrors > Home > MPE Home > Th. List > ralcom | Structured version Visualization version GIF version | ||
| Description: Commutation of restricted universal quantifiers. See ralcom2 3353 for a version without disjoint variable condition on 𝑥, 𝑦. This theorem should be used in place of ralcom2 3353 since it depends on a smaller set of axioms. (Contributed by NM, 13-Oct-1999.) (Revised by Mario Carneiro, 14-Oct-2016.) |
| Ref | Expression |
|---|---|
| ralcom | ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑦 ∈ 𝐵 ∀𝑥 ∈ 𝐴 𝜑) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ancomst 464 | . . . 4 ⊢ (((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → 𝜑) ↔ ((𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐴) → 𝜑)) | |
| 2 | 1 | 2albii 1820 | . . 3 ⊢ (∀𝑥∀𝑦((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → 𝜑) ↔ ∀𝑥∀𝑦((𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐴) → 𝜑)) |
| 3 | alcom 2160 | . . 3 ⊢ (∀𝑥∀𝑦((𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐴) → 𝜑) ↔ ∀𝑦∀𝑥((𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐴) → 𝜑)) | |
| 4 | 2, 3 | bitri 275 | . 2 ⊢ (∀𝑥∀𝑦((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → 𝜑) ↔ ∀𝑦∀𝑥((𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐴) → 𝜑)) |
| 5 | r2al 3174 | . 2 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑥∀𝑦((𝑥 ∈ 𝐴 ∧ 𝑦 ∈ 𝐵) → 𝜑)) | |
| 6 | r2al 3174 | . 2 ⊢ (∀𝑦 ∈ 𝐵 ∀𝑥 ∈ 𝐴 𝜑 ↔ ∀𝑦∀𝑥((𝑦 ∈ 𝐵 ∧ 𝑥 ∈ 𝐴) → 𝜑)) | |
| 7 | 4, 5, 6 | 3bitr4i 303 | 1 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑦 ∈ 𝐵 ∀𝑥 ∈ 𝐴 𝜑) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∀wal 1538 ∈ wcel 2109 ∀wral 3045 |
| 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-11 2158 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1780 df-ral 3046 |
| This theorem is referenced by: rexcom 3267 ralrot3 3270 ralcom13 3271 ralcom13OLD 3272 2reu4lem 4488 ssint 4931 iinrab2 5037 disjxun 5108 reusv3 5363 cnvpo 6263 cnvso 6264 dfpo2 6272 fununi 6594 isocnv2 7309 dfsmo2 8319 tz7.48lem 8412 ixpiin 8900 boxriin 8916 dedekind 11344 rexfiuz 15321 gcdcllem1 16476 mreacs 17626 comfeq 17674 catpropd 17677 isnsg2 19095 cntzrec 19275 oppgsubm 19301 opprirred 20338 opprsubrng 20475 opprsubrg 20509 opprdomnb 20633 rmodislmodlem 20842 rmodislmod 20843 islindf4 21754 cpmatmcllem 22612 tgss2 22881 ist1-2 23241 kgencn 23450 ptcnplem 23515 cnmptcom 23572 fbun 23734 cnflf 23896 fclsopn 23908 cnfcf 23936 isclmp 25004 isncvsngp 25056 caucfil 25190 ovolgelb 25388 dyadmax 25506 ftc1a 25951 ulmcau 26311 noetasuplem4 27655 conway 27718 cofcutr 27839 addsprop 27890 onsfi 28254 perpcom 28647 colinearalg 28844 uhgrvd00 29469 pthdlem2lem 29704 frgrwopregbsn 30253 phoeqi 30793 ho02i 31765 hoeq2 31767 adjsym 31769 cnvadj 31828 mddmd2 32245 cdj3lem3b 32376 mgccnv 32932 cvmlift2lem12 35308 elpotr 35776 fvineqsnf1 37405 poimirlem29 37650 heicant 37656 ispsubsp2 39747 fsuppind 42585 nla0003 43421 ntrclsiso 44063 ntrneiiso 44087 ntrneik2 44088 ntrneix2 44089 ntrneik3 44092 ntrneix3 44093 ntrneik13 44094 ntrneix13 44095 ntrneik4w 44096 imo72b2 44168 tratrb 44533 hbra2VD 44856 tratrbVD 44857 termopropd 49237 |
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