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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 5729 | . . 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 5823 | . 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 3080 {csn 4588 〈cop 4838 ∪ ciun 4954 × cxp 5654 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5253 ax-pr 5396 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-iun 4956 df-opab 5172 df-xp 5662 df-rel 5663 |
| This theorem is used by: ralxpf 5831 reu3op 6316 f1opr 7502 ffnov 7572 eqfnov 7575 ovn0ssdmfun 7616 funimassov 7625 f1stres 8052 f2ndres 8053 naddf 8722 ecopover 8873 xpf1o 9189 xpwdomg 9609 rankxplim 9926 imasaddfnlem 17732 imasvscafn 17741 comfeq 17912 isssc 18027 isfuncd 18072 cofucl 18095 funcres2b 18104 evlfcl 18428 uncfcurf 18445 yonedalem3 18486 yonedainv 18487 efgval2 19971 srgfcl 20455 txbas 23919 hausdiag 23997 tx1stc 24002 txkgen 24004 xkococn 24012 cnmpt21 24023 xkoinjcn 24039 tmdcn2 24441 clssubg 24461 qustgplem 24473 txmetcnp 24899 txmetcn 24900 qtopbaslem 25110 bndth 25312 cxpcn3 27109 mpodvdsmulf1o 27554 fsumdvdsmul 27555 dvdsmulf1o 27556 addsf 28401 xrofsup 33432 txpconn 36177 cvmlift2lem1 36247 cvmlift2lem12 36259 mclsax 36514 ismtyhmeolem 38941 dih1dimatlem 42589 ffnaov 48484 plusfreseq 49476 funcf2lem 50410 imaidfu 50441 imasubc 50482 imassc 50484 fucofulem2 50648 |
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