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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 1827 ax-4 1841 |
| This proof depends on definitions: df-bi 210 df-ral 3077 |
| This theorem is used by: 3ralbii 3139 ralnex3 3143 rmo4f 3692 2reu4lem 4478 cnvso 6294 fununi 6620 dff14a 7278 dff15 7280 isocnv2 7343 f1opr 7480 sorpss 7748 xpord3inddlem 8177 tpossym 8282 dford2 9628 isffth2 18102 ispos2 18498 issubmgm 18900 issubm 19007 cntzrec 19559 oppgsubm 19585 dfring3 20527 opprirred 20661 opprsubrng 20820 rhmimasubrng 20827 cntzsubrng 20828 opprsubrg 20854 isdomn5 20971 isdomn3 20975 prmidl0 21643 gsummatr01lem3 22981 gsummatr01 22983 isbasis2g 23275 ist0-3 23672 isfbas2 24163 isclmp 25427 addsproplem4 28367 addsproplem6 28369 addsprop 28371 negsproplem4 28426 negsproplem6 28428 negsprop 28430 mulsprop 28525 dfadj2 32496 adjval2 32502 cnlnadjeui 32688 adjbdln 32694 isarchi 33793 ply1dg3rt0irred 34166 iccllysconn 36105 dfso3 36581 elpotr 36639 dfon2 36650 idinxpss 39359 inxpssidinxp 39363 idinxpssinxp 39364 dfdisjALTV5a 39844 dfeldisj5 39854 dfeldisj5a 39855 isltrn2N 41286 hashnexinj 43287 fphpd 43932 fiinfi 44683 ntrk1k3eqk13 45159 ordelordALT 45628 dfac5prim 46088 disjinfi 46315 isthinc2 50663 isthinc3 50664 |
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