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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 5698 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
| 2 | 1 | raleqi 3296 | . 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 278 | 1 ⊢ (∀𝑥 ∈ (𝐴 × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 = wceq 1547 ∀wral 3054 {csn 4562 〈cop 4568 ∪ ciun 4928 × cxp 5623 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-pr 5369 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-iun 4930 df-opab 5142 df-xp 5631 df-rel 5632 |
| This theorem is referenced by: ralxpf 5795 reu3op 6250 f1opr 7419 ffnov 7489 eqfnov 7492 funimassov 7540 f1stres 7962 f2ndres 7963 naddf 8614 ecopover 8765 xpf1o 9074 xpwdomg 9497 rankxplim 9801 imasaddfnlem 17490 imasvscafn 17499 comfeq 17670 isssc 17785 isfuncd 17830 cofucl 17853 funcres2b 17862 evlfcl 18186 uncfcurf 18203 yonedalem3 18244 yonedainv 18245 efgval2 19697 srgfcl 20175 txbas 23557 hausdiag 23635 tx1stc 23640 txkgen 23642 xkococn 23650 cnmpt21 23661 xkoinjcn 23677 tmdcn2 24079 clssubg 24099 qustgplem 24111 txmetcnp 24537 txmetcn 24538 qtopbaslem 24748 bndth 24950 cxpcn3 26737 mpodvdsmulf1o 27182 fsumdvdsmul 27183 dvdsmulf1o 27184 addsf 27999 xrofsup 32866 txpconn 35467 cvmlift2lem1 35537 cvmlift2lem12 35549 mclsax 35804 ismtyhmeolem 38178 dih1dimatlem 41828 ffnaov 47669 ovn0ssdmfun 48657 plusfreseq 48662 funcf2lem 49578 imaidfu 49607 imasubc 49648 imassc 49650 fucofulem2 49808 |
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