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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 1542 ∀wral 3052 {csn 4568 〈cop 4574 ∪ ciun 4934 × cxp 5622 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-pr 5370 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-iun 4936 df-opab 5149 df-xp 5630 df-rel 5631 |
| This theorem is referenced by: ralxpf 5795 reu3op 6250 f1opr 7416 ffnov 7486 eqfnov 7489 funimassov 7537 f1stres 7959 f2ndres 7960 naddf 8610 ecopover 8761 xpf1o 9070 xpwdomg 9493 rankxplim 9794 imasaddfnlem 17483 imasvscafn 17492 comfeq 17663 isssc 17778 isfuncd 17823 cofucl 17846 funcres2b 17855 evlfcl 18179 uncfcurf 18196 yonedalem3 18237 yonedainv 18238 efgval2 19690 srgfcl 20168 txbas 23542 hausdiag 23620 tx1stc 23625 txkgen 23627 xkococn 23635 cnmpt21 23646 xkoinjcn 23662 tmdcn2 24064 clssubg 24084 qustgplem 24096 txmetcnp 24522 txmetcn 24523 qtopbaslem 24733 bndth 24935 cxpcn3 26725 mpodvdsmulf1o 27171 fsumdvdsmul 27172 dvdsmulf1o 27173 addsf 27988 xrofsup 32855 txpconn 35430 cvmlift2lem1 35500 cvmlift2lem12 35512 mclsax 35767 ismtyhmeolem 38139 dih1dimatlem 41789 ffnaov 47659 ovn0ssdmfun 48647 plusfreseq 48652 funcf2lem 49568 imaidfu 49597 imasubc 49638 imassc 49640 fucofulem2 49798 |
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