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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 3113 | . 2 ⊢ (∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑦 ∈ 𝐵 𝜓) |
| 3 | 2 | ralbii 3113 | 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 3081 |
| 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 3082 |
| This theorem is used by: 3ralbii 3144 ralnex3 3148 rmo4f 3700 2reu4lem 4486 cnvso 6293 fununi 6615 dff14a 7273 dff15 7275 isocnv2 7338 f1opr 7475 sorpss 7735 xpord3inddlem 8156 tpossym 8260 dford2 9596 isffth2 17997 ispos2 18393 issubmgm 18792 issubm 18898 cntzrec 19450 oppgsubm 19476 opprirred 20550 opprsubrng 20708 rhmimasubrng 20715 cntzsubrng 20716 opprsubrg 20742 isdomn5 20859 isdomn3 20863 prmidl0 21528 gsummatr01lem3 22864 gsummatr01 22866 isbasis2g 23155 ist0-3 23552 isfbas2 24043 isclmp 25307 addsproplem4 28216 addsproplem6 28218 addsprop 28220 negsproplem4 28275 negsproplem6 28277 negsprop 28279 mulsprop 28374 dfadj2 32308 adjval2 32314 cnlnadjeui 32500 adjbdln 32506 isarchi 33566 ply1dg3rt0irred 33938 iccllysconn 35779 dfso3 36249 elpotr 36308 dfon2 36319 idinxpss 39025 inxpssidinxp 39029 idinxpssinxp 39030 dfdisjALTV5a 39510 dfeldisj5 39520 dfeldisj5a 39521 isltrn2N 40952 hashnexinj 42953 fphpd 43601 fiinfi 44357 ntrk1k3eqk13 44834 ordelordALT 45304 dfac5prim 45757 disjinfi 45968 isthinc2 50255 isthinc3 50256 |
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