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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 5704 | . . 3 ⊢ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵) = (𝐴 × 𝐵) | |
| 2 | 1 | raleqi 3293 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑥 ∈ (𝐴 × 𝐵)𝜑) |
| 3 | ralxp.1 | . . 3 ⊢ (𝑥 = 〈𝑦, 𝑧〉 → (𝜑 ↔ 𝜓)) | |
| 4 | 3 | raliunxp 5794 | . 2 ⊢ (∀𝑥 ∈ ∪ 𝑦 ∈ 𝐴 ({𝑦} × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| 5 | 2, 4 | bitr3i 277 | 1 ⊢ (∀𝑥 ∈ (𝐴 × 𝐵)𝜑 ↔ ∀𝑦 ∈ 𝐴 ∀𝑧 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1542 ∀wral 3051 {csn 4567 〈cop 4573 ∪ ciun 4933 × cxp 5629 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-iun 4935 df-opab 5148 df-xp 5637 df-rel 5638 |
| This theorem is referenced by: ralxpf 5801 reu3op 6256 f1opr 7423 ffnov 7493 eqfnov 7496 funimassov 7544 f1stres 7966 f2ndres 7967 naddf 8617 ecopover 8768 xpf1o 9077 xpwdomg 9500 rankxplim 9803 imasaddfnlem 17492 imasvscafn 17501 comfeq 17672 isssc 17787 isfuncd 17832 cofucl 17855 funcres2b 17864 evlfcl 18188 uncfcurf 18205 yonedalem3 18246 yonedainv 18247 efgval2 19699 srgfcl 20177 txbas 23532 hausdiag 23610 tx1stc 23615 txkgen 23617 xkococn 23625 cnmpt21 23636 xkoinjcn 23652 tmdcn2 24054 clssubg 24074 qustgplem 24086 txmetcnp 24512 txmetcn 24513 qtopbaslem 24723 bndth 24925 cxpcn3 26712 mpodvdsmulf1o 27157 fsumdvdsmul 27158 dvdsmulf1o 27159 addsf 27974 xrofsup 32840 txpconn 35414 cvmlift2lem1 35484 cvmlift2lem12 35496 mclsax 35751 ismtyhmeolem 38125 dih1dimatlem 41775 ffnaov 47647 ovn0ssdmfun 48635 plusfreseq 48640 funcf2lem 49556 imaidfu 49585 imasubc 49626 imassc 49628 fucofulem2 49786 |
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