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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 5705 | . . 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 5796 | . 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 4582 〈cop 4588 ∪ ciun 4948 × cxp 5630 |
| 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 5243 ax-pr 5379 |
| 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 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-iun 4950 df-opab 5163 df-xp 5638 df-rel 5639 |
| This theorem is referenced by: ralxpf 5803 reu3op 6258 f1opr 7424 ffnov 7494 eqfnov 7497 funimassov 7545 f1stres 7967 f2ndres 7968 naddf 8619 ecopover 8770 xpf1o 9079 xpwdomg 9502 rankxplim 9803 imasaddfnlem 17461 imasvscafn 17470 comfeq 17641 isssc 17756 isfuncd 17801 cofucl 17824 funcres2b 17833 evlfcl 18157 uncfcurf 18174 yonedalem3 18215 yonedainv 18216 efgval2 19665 srgfcl 20143 txbas 23523 hausdiag 23601 tx1stc 23606 txkgen 23608 xkococn 23616 cnmpt21 23627 xkoinjcn 23643 tmdcn2 24045 clssubg 24065 qustgplem 24077 txmetcnp 24503 txmetcn 24504 qtopbaslem 24714 bndth 24925 cxpcn3 26726 mpodvdsmulf1o 27172 fsumdvdsmul 27173 dvdsmulf1o 27174 fsumdvdsmulOLD 27175 addsf 27990 xrofsup 32857 txpconn 35445 cvmlift2lem1 35515 cvmlift2lem12 35527 mclsax 35782 ismtyhmeolem 38052 dih1dimatlem 41702 ffnaov 47556 ovn0ssdmfun 48516 plusfreseq 48521 funcf2lem 49437 imaidfu 49466 imasubc 49507 imassc 49509 fucofulem2 49667 |
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