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Theorem ralrot3 2670
Description: Rotate three restricted universal quantifiers. (Contributed by AV, 3-Dec-2021.)
Assertion
Ref Expression
ralrot3 (∀𝑥𝐴𝑦𝐵𝑧𝐶 𝜑 ↔ ∀𝑧𝐶𝑥𝐴𝑦𝐵 𝜑)
Distinct variable groups:   𝑧,𝐴   𝑧,𝐵   𝑥,𝐶   𝑦,𝐶   𝑥,𝑧   𝑦,𝑧
Allowed substitution hints:   𝜑(𝑥,𝑦,𝑧)   𝐴(𝑥,𝑦)   𝐵(𝑥,𝑦)   𝐶(𝑧)

Proof of Theorem ralrot3
StepHypRef Expression
1 ralcom 2668 . . 3 (∀𝑦𝐵𝑧𝐶 𝜑 ↔ ∀𝑧𝐶𝑦𝐵 𝜑)
21ralbii 2511 . 2 (∀𝑥𝐴𝑦𝐵𝑧𝐶 𝜑 ↔ ∀𝑥𝐴𝑧𝐶𝑦𝐵 𝜑)
3 ralcom 2668 . 2 (∀𝑥𝐴𝑧𝐶𝑦𝐵 𝜑 ↔ ∀𝑧𝐶𝑥𝐴𝑦𝐵 𝜑)
42, 3bitri 184 1 (∀𝑥𝐴𝑦𝐵𝑧𝐶 𝜑 ↔ ∀𝑧𝐶𝑥𝐴𝑦𝐵 𝜑)
Colors of variables: wff set class
Syntax hints:  wb 105  wral 2483
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-ext 2186
This theorem depends on definitions:  df-bi 117  df-tru 1375  df-nf 1483  df-sb 1785  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ral 2488
This theorem is referenced by:  rmodislmodlem  14083  rmodislmod  14084
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