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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 5709 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
2 | 1 | raleqi 3309 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
4 | 3 | raliunxp 5800 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
5 | 2, 4 | bitr3i 276 | 1 ⊢ (∀𝑥 ∈ (𝐴 × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 = wceq 1541 ∀wral 3060 {csn 4591 〈cop 4597 ∪ ciun 4959 × cxp 5636 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 ax-sep 5261 ax-nul 5268 ax-pr 5389 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ral 3061 df-rex 3070 df-rab 3406 df-v 3448 df-sbc 3743 df-csb 3859 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4288 df-if 4492 df-sn 4592 df-pr 4594 df-op 4598 df-iun 4961 df-opab 5173 df-xp 5644 df-rel 5645 |
This theorem is referenced by: ralxpf 5807 reu3op 6249 f1opr 7418 ffnov 7488 eqfnov 7490 funimassov 7536 f1stres 7950 f2ndres 7951 naddf 8632 ecopover 8767 xpf1o 9090 xpwdomg 9530 rankxplim 9824 imasaddfnlem 17424 imasvscafn 17433 comfeq 17600 isssc 17717 isfuncd 17765 cofucl 17788 funcres2b 17797 evlfcl 18125 uncfcurf 18142 yonedalem3 18183 yonedainv 18184 efgval2 19520 srgfcl 19941 txbas 22955 hausdiag 23033 tx1stc 23038 txkgen 23040 xkococn 23048 cnmpt21 23059 xkoinjcn 23075 tmdcn2 23477 clssubg 23497 qustgplem 23509 txmetcnp 23940 txmetcn 23941 qtopbaslem 24159 bndth 24358 cxpcn3 26138 dvdsmulf1o 26580 fsumdvdsmul 26581 addsf 27335 xrofsup 31740 txpconn 33913 cvmlift2lem1 33983 cvmlift2lem12 33995 mclsax 34250 ismtyhmeolem 36336 dih1dimatlem 39865 ffnaov 45551 ovn0ssdmfun 46181 plusfreseq 46186 funcf2lem 47158 |
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