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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 5724 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
| 2 | 1 | raleqi 3318 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
| 3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | raliunxp 5816 | . 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 3077 {csn 4584 〈cop 4590 ∪ ciun 4951 × cxp 5649 |
| 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 2213 ax-ext 2733 ax-sep 5249 ax-pr 5391 |
| 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 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-iun 4953 df-opab 5168 df-xp 5657 df-rel 5658 |
| This theorem is used by: ralxpf 5824 reu3op 6288 f1opr 7468 ffnov 7538 eqfnov 7541 ovn0ssdmfun 7581 funimassov 7590 f1stres 8014 f2ndres 8015 naddf 8675 ecopover 8826 xpf1o 9142 xpwdomg 9563 rankxplim 9877 imasaddfnlem 17680 imasvscafn 17689 comfeq 17860 isssc 17975 isfuncd 18020 cofucl 18043 funcres2b 18052 evlfcl 18376 uncfcurf 18393 yonedalem3 18434 yonedainv 18435 efgval2 19918 srgfcl 20402 txbas 23866 hausdiag 23944 tx1stc 23949 txkgen 23951 xkococn 23959 cnmpt21 23970 xkoinjcn 23986 tmdcn2 24388 clssubg 24408 qustgplem 24420 txmetcnp 24846 txmetcn 24847 qtopbaslem 25057 bndth 25259 cxpcn3 27058 mpodvdsmulf1o 27503 fsumdvdsmul 27504 dvdsmulf1o 27505 addsf 28350 xrofsup 33341 txpconn 35966 cvmlift2lem1 36036 cvmlift2lem12 36048 mclsax 36303 ismtyhmeolem 38706 dih1dimatlem 42354 ffnaov 48213 plusfreseq 49205 funcf2lem 50133 imaidfu 50162 imasubc 50203 imassc 50205 fucofulem2 50363 |
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