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Theorem weth 3602
Description: Well-ordering theorem: any set A can be well-ordered. This is an equivalent of the Axiom of Choice. Theorem 6 of [Suppes] p. 242.
Hypothesis
Ref Expression
weth.1 |- A e. V
Assertion
Ref Expression
weth |- E.x x We A
Distinct variable group(s):   x,A

Proof of Theorem weth
StepHypRef Expression
1 weth.1 . . 3 |- A e. V
21numth 3599 . 2 |- E.y e. On E.f f:y-1-1-onto->A
3 f1ocnv 2811 . . . . . 6 |- (f:y-1-1-onto->A -> `'f:A-1-1-onto->y)
4 cleqid 1102 . . . . . . . . 9 |- {<.z, w>. | (`'f` z)E(`'f` w)} = {<.z, w>. | (`'f` z)E(`'f` w)}
54f1owe 2943 . . . . . . . 8 |- (`'f:A-1-1-onto->y -> (E We y -> {<.z, w>. | (`'f` z)E(`'f` w)} We A))
6 weinxp 2467 . . . . . . . . 9 |- ({<.z, w>. | (`'f` z)E(`'f` w)} We A <-> ({<.z, w>. | (`'f` z)E(`'f` w)} i^i (A X. A)) We A)
71, 1xpex 2488 . . . . . . . . . . 11 |- (A X. A) e. V
87inex2 1698 . . . . . . . . . 10 |- ({<.z, w>. | (`'f` z)E(`'f` w)} i^i (A X. A)) e. V
9 weeq1 2189 . . . . . . . . . 10 |- (x = ({<.z, w>. | (`'f` z)E(`'f` w)} i^i (A X. A)) -> (x We A <-> ({<.z, w>. | (`'f` z)E(`'f` w)} i^i (A X. A)) We A))
108, 9cla4ev 1401 . . . . . . . . 9 |- (({<.z, w>. | (`'f` z)E(`'f` w)} i^i (A X. A)) We A -> E.x x We A)
116, 10sylbi 174 . . . . . . . 8 |- ({<.z, w>. | (`'f` z)E(`'f` w)} We A -> E.x x We A)
125, 11syl6 23 . . . . . . 7 |- (`'f:A-1-1-onto->y -> (E We y -> E.x x We A))
13 eloni 2209 . . . . . . . 8 |- (y e. On -> Ord y)
14 ordwe 2212 . . . . . . . 8 |- (Ord y -> E We y)
1513, 14syl 12 . . . . . . 7 |- (y e. On -> E We y)
1612, 15syl5 22 . . . . . 6 |- (`'f:A-1-1-onto->y -> (y e. On -> E.x x We A))
173, 16syl 12 . . . . 5 |- (f:y-1-1-onto->A -> (y e. On -> E.x x We A))
181719.23aiv 952 . . . 4 |- (E.f f:y-1-1-onto->A -> (y e. On -> E.x x We A))
1918com12 13 . . 3 |- (y e. On -> (E.f f:y-1-1-onto->A -> E.x x We A))
2019r19.23aiv 1284 . 2 |- (E.y e. On E.f f:y-1-1-onto->A -> E.x x We A)
212, 20ax-mp 6 1 |- E.x x We A
Colors of variables: wff set class
Syntax hints:   -> wi 2  E.wex 678   e. wcel 1092  E.wrex 1202  Vcvv 1348   i^i cin 1486   class class class wbr 2054  {copab 2055  Ecep 2056   We wwe 2062  Ord word 2198  Oncon0 2199   X. cxp 2408  `'ccnv 2409  -1-1-onto->wf1o 2421  ` cfv 2422
This theorem is referenced by:  zornlem7 3609
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-un 1076  ax-pow 1077  ax-reg 1078  ax-ac 1080
This theorem depends on definitions:  df-bi 128  df-or 197  df-an 198  df-3or 582  df-3an 583  df-ex 679  df-sb 853  df-eu 1009  df-mo 1010  df-clab 1093  df-cleq 1097  df-clel 1099  df-ral 1205  df-rex 1206  df-reu 1207  df-rab 1208  df-v 1349  df-sbc 1441  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-tp 1814  df-op 1815  df-uni 1920  df-int 1966  df-tr 2042  df-br 2063  df-opab 2098  df-eprel 2122  df-id 2125  df-po 2128  df-so 2138  df-fr 2169  df-we 2186  df-ord 2202  df-on 2203  df-suc 2205  df-xp 2424  df-rel 2425  df-cnv 2426  df-co 2427  df-dm 2428  df-rn 2429  df-res 2430  df-ima 2431  df-fun 2432  df-fn 2433  df-f 2434  df-f1 2435  df-fo 2436  df-f1o 2437  df-fv 2438  df-iso 2439
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