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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 3108 | . 2 ⊢ (∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑦 ∈ 𝐵 𝜓) |
| 3 | 2 | ralbii 3108 | 1 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 ∀wral 3076 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 |
| This proof depends on definitions: df-bi 210 df-ral 3077 |
| This theorem is used by: 3ralbii 3139 ralnex3 3143 rmo4f 3693 2reu4lem 4479 cnvso 6286 fununi 6608 dff14a 7267 dff15 7269 isocnv2 7332 f1opr 7469 sorpss 7729 xpord3inddlem 8152 tpossym 8256 dford2 9599 isffth2 18007 ispos2 18403 issubmgm 18804 issubm 18911 cntzrec 19463 oppgsubm 19489 opprirred 20563 opprsubrng 20721 rhmimasubrng 20728 cntzsubrng 20729 opprsubrg 20755 isdomn5 20872 isdomn3 20876 prmidl0 21541 gsummatr01lem3 22879 gsummatr01 22881 isbasis2g 23173 ist0-3 23570 isfbas2 24061 isclmp 25325 addsproplem4 28237 addsproplem6 28239 addsprop 28241 negsproplem4 28296 negsproplem6 28298 negsprop 28300 mulsprop 28395 dfadj2 32366 adjval2 32372 cnlnadjeui 32558 adjbdln 32564 isarchi 33622 ply1dg3rt0irred 33994 iccllysconn 35829 dfso3 36299 elpotr 36358 dfon2 36369 idinxpss 39066 inxpssidinxp 39070 idinxpssinxp 39071 dfdisjALTV5a 39551 dfeldisj5 39561 dfeldisj5a 39562 isltrn2N 40993 hashnexinj 42994 fphpd 43657 fiinfi 44413 ntrk1k3eqk13 44890 ordelordALT 45360 dfac5prim 45813 disjinfi 46024 isthinc2 50346 isthinc3 50347 |
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