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| Mirrors > Home > MPE Home > Th. List > ralxp | Structured version Visualization version GIF version | ||
| Description: Universal quantification restricted to a Cartesian product is equivalent to a double restricted quantification. The hypothesis specifies an implicit substitution. (Contributed by NM, 7-Feb-2004.) (Revised by Mario Carneiro, 29-Dec-2014.) |
| Ref | Expression |
|---|---|
| ralxp.1 | ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) |
| Ref | Expression |
|---|---|
| ralxp | ⊢ (∀𝑥 ∈ (𝐴 × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | iunxpconst 5697 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
| 2 | 1 | raleqi 3294 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
| 3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | raliunxp 5788 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| 5 | 2, 4 | bitr3i 277 | 1 ⊢ (∀𝑥 ∈ (𝐴 × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1541 ∀wral 3051 {csn 4580 〈cop 4586 ∪ ciun 4946 × cxp 5622 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-iun 4948 df-opab 5161 df-xp 5630 df-rel 5631 |
| This theorem is referenced by: ralxpf 5795 reu3op 6250 f1opr 7414 ffnov 7484 eqfnov 7487 funimassov 7535 f1stres 7957 f2ndres 7958 naddf 8609 ecopover 8758 xpf1o 9067 xpwdomg 9490 rankxplim 9791 imasaddfnlem 17449 imasvscafn 17458 comfeq 17629 isssc 17744 isfuncd 17789 cofucl 17812 funcres2b 17821 evlfcl 18145 uncfcurf 18162 yonedalem3 18203 yonedainv 18204 efgval2 19653 srgfcl 20131 txbas 23511 hausdiag 23589 tx1stc 23594 txkgen 23596 xkococn 23604 cnmpt21 23615 xkoinjcn 23631 tmdcn2 24033 clssubg 24053 qustgplem 24065 txmetcnp 24491 txmetcn 24492 qtopbaslem 24702 bndth 24913 cxpcn3 26714 mpodvdsmulf1o 27160 fsumdvdsmul 27161 dvdsmulf1o 27162 fsumdvdsmulOLD 27163 addsf 27978 xrofsup 32847 txpconn 35426 cvmlift2lem1 35496 cvmlift2lem12 35508 mclsax 35763 ismtyhmeolem 38005 dih1dimatlem 41589 ffnaov 47445 ovn0ssdmfun 48405 plusfreseq 48410 funcf2lem 49326 imaidfu 49355 imasubc 49396 imassc 49398 fucofulem2 49556 |
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