| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 3321 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
| 3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | raliunxp 5815 | . 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 |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1563 ∀wral 3079 {csn 4585 〈cop 4591 ∪ ciun 4951 × cxp 5649 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-pr 5394 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-sn 4586 df-pr 4588 df-op 4592 df-iun 4953 df-opab 5167 df-xp 5657 df-rel 5658 |
| This theorem is referenced by: ralxpf 5822 reu3op 6282 f1opr 7456 ffnov 7526 eqfnov 7529 funimassov 7577 f1stres 7998 f2ndres 7999 naddf 8656 ecopover 8807 xpf1o 9115 xpwdomg 9535 rankxplim 9839 imasaddfnlem 17570 imasvscafn 17579 comfeq 17750 isssc 17865 isfuncd 17910 cofucl 17933 funcres2b 17942 evlfcl 18266 uncfcurf 18283 yonedalem3 18324 yonedainv 18325 efgval2 19782 srgfcl 20266 txbas 23681 hausdiag 23759 tx1stc 23764 txkgen 23766 xkococn 23774 cnmpt21 23785 xkoinjcn 23801 tmdcn2 24203 clssubg 24223 qustgplem 24235 txmetcnp 24661 txmetcn 24662 qtopbaslem 24872 bndth 25074 cxpcn3 26867 mpodvdsmulf1o 27312 fsumdvdsmul 27313 dvdsmulf1o 27314 addsf 28129 xrofsup 33020 txpconn 35590 cvmlift2lem1 35660 cvmlift2lem12 35672 mclsax 35927 ismtyhmeolem 38310 dih1dimatlem 41960 ffnaov 47792 ovn0ssdmfun 48780 plusfreseq 48785 funcf2lem 49711 imaidfu 49740 imasubc 49781 imassc 49783 fucofulem2 49941 |
| Copyright terms: Public domain | W3C validator |