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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 3083 | . 2 ⊢ (∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑦 ∈ 𝐵 𝜓) |
| 3 | 2 | ralbii 3083 | 1 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∀wral 3051 |
| 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 3052 |
| This theorem is referenced by: 3ralbii 3114 ralnex3 3118 rmo4f 3681 2reu4lem 4463 cnvso 6252 fununi 6573 dff14a 7225 isocnv2 7286 f1opr 7423 sorpss 7682 xpord3inddlem 8104 tpossym 8208 dford2 9541 isffth2 17885 ispos2 18281 issubmgm 18670 issubm 18771 cntzrec 19311 oppgsubm 19337 opprirred 20402 opprsubrng 20536 rhmimasubrng 20543 cntzsubrng 20544 opprsubrg 20570 isdomn5 20687 isdomn3 20692 gsummatr01lem3 22622 gsummatr01 22624 isbasis2g 22913 ist0-3 23310 isfbas2 23800 isclmp 25064 addsproplem4 27964 addsproplem6 27966 addsprop 27968 negsproplem4 28023 negsproplem6 28025 negsprop 28027 mulsprop 28122 dfadj2 31956 adjval2 31962 cnlnadjeui 32148 adjbdln 32154 isarchi 33243 prmidl0 33510 ply1dg3rt0irred 33644 dff15 35227 iccllysconn 35432 dfso3 35902 elpotr 35961 dfon2 35972 idinxpss 38639 inxpssidinxp 38643 idinxpssinxp 38644 dfdisjALTV5a 39124 dfeldisj5 39134 dfeldisj5a 39135 isltrn2N 40566 hashnexinj 42567 fphpd 43244 fiinfi 44000 ntrk1k3eqk13 44477 ordelordALT 44964 dfac5prim 45417 disjinfi 45622 isthinc2 49895 isthinc3 49896 |
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