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| Mirrors > Home > MPE Home > Th. List > 2ralbii | Structured version Visualization version GIF version | ||
| Description: Inference adding two restricted universal quantifiers to both sides of an equivalence. (Contributed by NM, 1-Aug-2004.) |
| Ref | Expression |
|---|---|
| 2ralbii.1 | ⊢ (𝜑 ↔ 𝜓) |
| Ref | Expression |
|---|---|
| 2ralbii | ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2ralbii.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
| 2 | 1 | ralbii 3084 | . 2 ⊢ (∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑦 ∈ 𝐵 𝜓) |
| 3 | 2 | ralbii 3084 | 1 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∀wral 3052 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 |
| This theorem depends on definitions: df-bi 207 df-ral 3053 |
| This theorem is referenced by: 3ralbii 3115 ralnex3 3119 rmo4f 3695 2reu4lem 4478 cnvso 6254 fununi 6575 dff14a 7226 isocnv2 7287 f1opr 7424 sorpss 7683 xpord3inddlem 8106 tpossym 8210 dford2 9541 isffth2 17854 ispos2 18250 issubmgm 18639 issubm 18740 cntzrec 19277 oppgsubm 19303 opprirred 20370 opprsubrng 20504 rhmimasubrng 20511 cntzsubrng 20512 opprsubrg 20538 isdomn5 20655 isdomn3 20660 gsummatr01lem3 22613 gsummatr01 22615 isbasis2g 22904 ist0-3 23301 isfbas2 23791 isclmp 25065 addsproplem4 27980 addsproplem6 27982 addsprop 27984 negsproplem4 28039 negsproplem6 28041 negsprop 28043 mulsprop 28138 dfadj2 31973 adjval2 31979 cnlnadjeui 32165 adjbdln 32171 isarchi 33276 prmidl0 33543 ply1dg3rt0irred 33677 dff15 35261 iccllysconn 35466 dfso3 35936 elpotr 35995 dfon2 36006 idinxpss 38569 inxpssidinxp 38573 idinxpssinxp 38574 dfdisjALTV5a 39054 dfeldisj5 39064 dfeldisj5a 39065 isltrn2N 40496 hashnexinj 42498 fphpd 43173 fiinfi 43929 ntrk1k3eqk13 44406 ordelordALT 44893 dfac5prim 45346 disjinfi 45551 isthinc2 49779 isthinc3 49780 |
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