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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 5716 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
| 2 | 1 | raleqi 3317 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
| 3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | raliunxp 5807 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| 5 | 2, 4 | bitr3i 279 | 1 ⊢ (∀𝑥 ∈ (𝐴 × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 = wceq 1559 ∀wral 3075 {csn 4579 〈cop 4585 ∪ ciun 4946 × cxp 5641 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-pr 5387 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-sn 4580 df-pr 4582 df-op 4586 df-iun 4948 df-opab 5160 df-xp 5649 df-rel 5650 |
| This theorem is referenced by: ralxpf 5814 reu3op 6273 f1opr 7446 ffnov 7516 eqfnov 7519 funimassov 7567 f1stres 7988 f2ndres 7989 naddf 8645 ecopover 8796 xpf1o 9104 xpwdomg 9526 rankxplim 9830 imasaddfnlem 17548 imasvscafn 17557 comfeq 17728 isssc 17843 isfuncd 17888 cofucl 17911 funcres2b 17920 evlfcl 18244 uncfcurf 18261 yonedalem3 18302 yonedainv 18303 efgval2 19754 srgfcl 20232 txbas 23614 hausdiag 23692 tx1stc 23697 txkgen 23699 xkococn 23707 cnmpt21 23718 xkoinjcn 23734 tmdcn2 24136 clssubg 24156 qustgplem 24168 txmetcnp 24594 txmetcn 24595 qtopbaslem 24805 bndth 25007 cxpcn3 26800 mpodvdsmulf1o 27245 fsumdvdsmul 27246 dvdsmulf1o 27247 addsf 28062 xrofsup 32929 txpconn 35542 cvmlift2lem1 35612 cvmlift2lem12 35624 mclsax 35879 ismtyhmeolem 38263 dih1dimatlem 41913 ffnaov 47753 ovn0ssdmfun 48741 plusfreseq 48746 funcf2lem 49662 imaidfu 49691 imasubc 49732 imassc 49734 fucofulem2 49892 |
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