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Theorem intasym 2627
Description: Two ways of saying a relation is antisymmetric. Definition of antisymmetry in [Schechter] p. 51.
Assertion
Ref Expression
intasym |- ((R i^i `'R) (_ I <-> A.xA.y((xRy /\ yRx) -> x = y))
Distinct variable group(s):   x,y,R

Proof of Theorem intasym
StepHypRef Expression
1 inss2 1658 . . . 4 |- (R i^i `'R) (_ `'R
2 relcnv 2624 . . . 4 |- Rel `'R
3 ssrel 2479 . . . 4 |- ((R i^i `'R) (_ `'R -> (Rel `'R -> Rel (R i^i `'R)))
41, 2, 3mp2 43 . . 3 |- Rel (R i^i `'R)
5 relss 2480 . . 3 |- (Rel (R i^i `'R) -> ((R i^i `'R) (_ I <-> A.xA.y(<.x, y>. e. (R i^i `'R) -> <.x, y>. e. I)))
64, 5ax-mp 6 . 2 |- ((R i^i `'R) (_ I <-> A.xA.y(<.x, y>. e. (R i^i `'R) -> <.x, y>. e. I))
7 df-br 2063 . . . . . 6 |- (xRy <-> <.x, y>. e. R)
8 visset 1350 . . . . . . . 8 |- x e. V
9 visset 1350 . . . . . . . 8 |- y e. V
108, 9brcnv 2519 . . . . . . 7 |- (x`'Ry <-> yRx)
11 df-br 2063 . . . . . . 7 |- (x`'Ry <-> <.x, y>. e. `'R)
1210, 11bitr3 153 . . . . . 6 |- (yRx <-> <.x, y>. e. `'R)
137, 12anbi12i 369 . . . . 5 |- ((xRy /\ yRx) <-> (<.x, y>. e. R /\ <.x, y>. e. `'R))
14 elin 1635 . . . . 5 |- (<.x, y>. e. (R i^i `'R) <-> (<.x, y>. e. R /\ <.x, y>. e. `'R))
1513, 14bitr4 154 . . . 4 |- ((xRy /\ yRx) <-> <.x, y>. e. (R i^i `'R))
168, 9ideq 2127 . . . . 5 |- (xIy <-> x = y)
17 df-br 2063 . . . . 5 |- (xIy <-> <.x, y>. e. I)
1816, 17bitr3 153 . . . 4 |- (x = y <-> <.x, y>. e. I)
1915, 18imbi12i 163 . . 3 |- (((xRy /\ yRx) -> x = y) <-> (<.x, y>. e. (R i^i `'R) -> <.x, y>. e. I))
2019bi2al 696 . 2 |- (A.xA.y((xRy /\ yRx) -> x = y) <-> A.xA.y(<.x, y>. e. (R i^i `'R) -> <.x, y>. e. I))
216, 20bitr4 154 1 |- ((R i^i `'R) (_ I <-> A.xA.y((xRy /\ yRx) -> x = y))
Colors of variables: wff set class
Syntax hints:   -> wi 2   <-> wb 127   /\ wa 196  A.wal 672   = weq 797   e. wcel 1092   i^i cin 1486   (_ wss 1487  <.cop 1810   class class class wbr 2054  Icid 2057  `'ccnv 2409  Rel wrel 2415
This theorem was proved from axioms:  ax-1 3  ax-2 4  ax-3 5  ax-mp 6  ax-4 673  ax-5 674  ax-6 675  ax-7 676  ax-gen 677  ax-8 798  ax-9 799  ax-10 800  ax-11 801  ax-12 802  ax-13 804  ax-14 805  ax-16 922  ax-17 925  ax-ext 1074  ax-rep 1075  ax-pow 1077
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-ex 679  df-sb 853  df-clab 1093  df-cleq 1097  df-clel 1099  df-v 1349  df-dif 1489  df-un 1490  df-in 1491  df-ss 1492  df-nul 1708  df-pw 1799  df-sn 1811  df-pr 1812  df-op 1815  df-br 2063  df-opab 2098  df-id 2125  df-xp 2424  df-rel 2425  df-cnv 2426
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