| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 5736 | . . 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 5827 | . 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 |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1570 ∀wral 3079 {csn 4590 〈cop 4596 ∪ ciun 4957 × cxp 5661 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-iun 4959 df-opab 5175 df-xp 5669 df-rel 5670 |
| This theorem is referenced by: ralxpf 5834 reu3op 6295 f1opr 7468 ffnov 7538 eqfnov 7541 funimassov 7589 f1stres 8011 f2ndres 8012 naddf 8669 ecopover 8820 xpf1o 9128 xpwdomg 9548 rankxplim 9852 imasaddfnlem 17583 imasvscafn 17592 comfeq 17763 isssc 17878 isfuncd 17923 cofucl 17946 funcres2b 17955 evlfcl 18279 uncfcurf 18296 yonedalem3 18337 yonedainv 18338 efgval2 19795 srgfcl 20279 txbas 23705 hausdiag 23783 tx1stc 23788 txkgen 23790 xkococn 23798 cnmpt21 23809 xkoinjcn 23825 tmdcn2 24227 clssubg 24247 qustgplem 24259 txmetcnp 24685 txmetcn 24686 qtopbaslem 24896 bndth 25098 cxpcn3 26894 mpodvdsmulf1o 27339 fsumdvdsmul 27340 dvdsmulf1o 27341 addsf 28156 xrofsup 33093 txpconn 35705 cvmlift2lem1 35775 cvmlift2lem12 35787 mclsax 36042 ismtyhmeolem 38436 dih1dimatlem 42084 ffnaov 47919 ovn0ssdmfun 48907 plusfreseq 48912 funcf2lem 49842 imaidfu 49871 imasubc 49912 imassc 49914 fucofulem2 50072 |
| Copyright terms: Public domain | W3C validator |