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Theorem tprot 3490
Description: Rotation of the elements of an unordered triple. (Contributed by Alan Sare, 24-Oct-2011.)
Assertion
Ref Expression
tprot {𝐴, 𝐵, 𝐶} = {𝐵, 𝐶, 𝐴}

Proof of Theorem tprot
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 3orrot 902 . . 3 ((𝑥 = 𝐴𝑥 = 𝐵𝑥 = 𝐶) ↔ (𝑥 = 𝐵𝑥 = 𝐶𝑥 = 𝐴))
21abbii 2169 . 2 {𝑥 ∣ (𝑥 = 𝐴𝑥 = 𝐵𝑥 = 𝐶)} = {𝑥 ∣ (𝑥 = 𝐵𝑥 = 𝐶𝑥 = 𝐴)}
3 dftp2 3446 . 2 {𝐴, 𝐵, 𝐶} = {𝑥 ∣ (𝑥 = 𝐴𝑥 = 𝐵𝑥 = 𝐶)}
4 dftp2 3446 . 2 {𝐵, 𝐶, 𝐴} = {𝑥 ∣ (𝑥 = 𝐵𝑥 = 𝐶𝑥 = 𝐴)}
52, 3, 43eqtr4i 2086 1 {𝐴, 𝐵, 𝐶} = {𝐵, 𝐶, 𝐴}
Colors of variables: wff set class
Syntax hints:  w3o 895   = wceq 1259  {cab 2042  {ctp 3404
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 103  ax-ia2 104  ax-ia3 105  ax-io 640  ax-5 1352  ax-7 1353  ax-gen 1354  ax-ie1 1398  ax-ie2 1399  ax-8 1411  ax-10 1412  ax-11 1413  ax-i12 1414  ax-bndl 1415  ax-4 1416  ax-17 1435  ax-i9 1439  ax-ial 1443  ax-i5r 1444  ax-ext 2038
This theorem depends on definitions:  df-bi 114  df-3or 897  df-tru 1262  df-nf 1366  df-sb 1662  df-clab 2043  df-cleq 2049  df-clel 2052  df-nfc 2183  df-v 2576  df-un 2949  df-sn 3408  df-pr 3409  df-tp 3410
This theorem is referenced by:  tpcomb  3492  tpass  3493  tpidm13  3497  tpidm23  3498  prsstp23  3546  fvtp2g  5397  fvtp3g  5398  fvtp2  5400  fvtp3  5401
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