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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 5739 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
| 2 | 1 | raleqi 3324 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
| 3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | raliunxp 5830 | . 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 3082 {csn 4594 〈cop 4600 ∪ ciun 4961 × cxp 5664 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-pr 5409 |
| 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 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-iun 4963 df-opab 5179 df-xp 5672 df-rel 5673 |
| This theorem is used by: ralxpf 5837 reu3op 6300 f1opr 7479 ffnov 7549 eqfnov 7552 funimassov 7600 f1stres 8019 f2ndres 8020 naddf 8677 ecopover 8828 xpf1o 9137 xpwdomg 9557 rankxplim 9861 imasaddfnlem 17607 imasvscafn 17616 comfeq 17787 isssc 17902 isfuncd 17947 cofucl 17970 funcres2b 17979 evlfcl 18303 uncfcurf 18320 yonedalem3 18361 yonedainv 18362 efgval2 19825 srgfcl 20309 txbas 23761 hausdiag 23839 tx1stc 23844 txkgen 23846 xkococn 23854 cnmpt21 23865 xkoinjcn 23881 tmdcn2 24283 clssubg 24303 qustgplem 24315 txmetcnp 24741 txmetcn 24742 qtopbaslem 24952 bndth 25154 cxpcn3 26950 mpodvdsmulf1o 27395 fsumdvdsmul 27396 dvdsmulf1o 27397 addsf 28212 xrofsup 33149 txpconn 35745 cvmlift2lem1 35815 cvmlift2lem12 35827 mclsax 36082 ismtyhmeolem 38496 dih1dimatlem 42144 ffnaov 47977 ovn0ssdmfun 48965 plusfreseq 48970 funcf2lem 49900 imaidfu 49929 imasubc 49970 imassc 49972 fucofulem2 50130 |
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