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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 5732 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
| 2 | 1 | raleqi 3319 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
| 3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | raliunxp 5823 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| 5 | 2, 4 | bitr3i 280 | 1 ⊢ (∀𝑥 ∈ (𝐴 × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ∀wral 3078 {csn 4587 〈cop 4593 ∪ ciun 4954 × cxp 5657 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-pr 5402 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-iun 4956 df-opab 5172 df-xp 5665 df-rel 5666 |
| This theorem is used by: ralxpf 5830 reu3op 6294 f1opr 7473 ffnov 7543 eqfnov 7546 ovn0ssdmfun 7586 funimassov 7595 f1stres 8014 f2ndres 8015 naddf 8674 ecopover 8825 xpf1o 9141 xpwdomg 9561 rankxplim 9865 imasaddfnlem 17620 imasvscafn 17629 comfeq 17800 isssc 17915 isfuncd 17960 cofucl 17983 funcres2b 17992 evlfcl 18316 uncfcurf 18333 yonedalem3 18374 yonedainv 18375 efgval2 19857 srgfcl 20341 txbas 23799 hausdiag 23877 tx1stc 23882 txkgen 23884 xkococn 23892 cnmpt21 23903 xkoinjcn 23919 tmdcn2 24321 clssubg 24341 qustgplem 24353 txmetcnp 24779 txmetcn 24780 qtopbaslem 24990 bndth 25192 cxpcn3 26993 mpodvdsmulf1o 27438 fsumdvdsmul 27439 dvdsmulf1o 27440 addsf 28255 xrofsup 33246 txpconn 35819 cvmlift2lem1 35889 cvmlift2lem12 35901 mclsax 36156 ismtyhmeolem 38562 dih1dimatlem 42210 ffnaov 48095 plusfreseq 49087 funcf2lem 50015 imaidfu 50044 imasubc 50085 imassc 50087 fucofulem2 50245 |
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