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Theorem axsltsolem1 14006
Description: Lemma for axsltso 14007. The sign expansion relationship totally orders the surreal signs.
Assertion
Ref Expression
axsltsolem1 |- {<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.} Or ({1o, 2o} u. {(/)})

Proof of Theorem axsltsolem1
StepHypRef Expression
1 1n0 5187 . . . . . . . 8 |- 1o =/= (/)
2 df-ne 2019 . . . . . . . 8 |- (1o =/= (/) <-> -. 1o = (/))
31, 2mpbi 206 . . . . . . 7 |- -. 1o = (/)
4 eqtr2 1905 . . . . . . 7 |- ((x = 1o /\ x = (/)) -> 1o = (/))
53, 4mto 121 . . . . . 6 |- -. (x = 1o /\ x = (/))
6 1on 5182 . . . . . . . . 9 |- 1o e. On
7 0elon 3716 . . . . . . . . 9 |- (/) e. On
8 suc11 3773 . . . . . . . . . 10 |- ((1o e. On /\ (/) e. On) -> (suc 1o = suc (/) <-> 1o = (/)))
9 df-2o 5178 . . . . . . . . . . 11 |- 2o = suc 1o
10 df-1o 5177 . . . . . . . . . . 11 |- 1o = suc (/)
119, 10eqeq12i 1897 . . . . . . . . . 10 |- (2o = 1o <-> suc 1o = suc (/))
128, 11syl5bb 591 . . . . . . . . 9 |- ((1o e. On /\ (/) e. On) -> (2o = 1o <-> 1o = (/)))
136, 7, 12mp2an 761 . . . . . . . 8 |- (2o = 1o <-> 1o = (/))
141, 13nemtbir 2099 . . . . . . 7 |- -. 2o = 1o
15 eqtr2 1905 . . . . . . . 8 |- ((x = 2o /\ x = 1o) -> 2o = 1o)
1615ancoms 484 . . . . . . 7 |- ((x = 1o /\ x = 2o) -> 2o = 1o)
1714, 16mto 121 . . . . . 6 |- -. (x = 1o /\ x = 2o)
18 nsuceq0 3749 . . . . . . . 8 |- suc 1o =/= (/)
199eqeq1i 1891 . . . . . . . 8 |- (2o = (/) <-> suc 1o = (/))
2018, 19nemtbir 2099 . . . . . . 7 |- -. 2o = (/)
21 eqtr2 1905 . . . . . . . 8 |- ((x = 2o /\ x = (/)) -> 2o = (/))
2221ancoms 484 . . . . . . 7 |- ((x = (/) /\ x = 2o) -> 2o = (/))
2320, 22mto 121 . . . . . 6 |- -. (x = (/) /\ x = 2o)
245, 17, 233pm3.2ni 13809 . . . . 5 |- -. ((x = 1o /\ x = (/)) \/ (x = 1o /\ x = 2o) \/ (x = (/) /\ x = 2o))
25 visset 2295 . . . . . 6 |- x e. _V
26 0ex 3446 . . . . . 6 |- (/) e. _V
27 2on 5183 . . . . . . 7 |- 2o e. On
2827elisseti 2301 . . . . . 6 |- 2o e. _V
2925, 25, 26, 28, 28brtp 13830 . . . . 5 |- (x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}x <-> ((x = 1o /\ x = (/)) \/ (x = 1o /\ x = 2o) \/ (x = (/) /\ x = 2o)))
3024, 29mtbir 209 . . . 4 |- -. x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}x
3130a1i 8 . . 3 |- (x e. {1o, 2o, (/)} -> -. x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}x)
32 eqtr2 1905 . . . . . . . . . . . 12 |- ((y = 1o /\ y = (/)) -> 1o = (/))
333, 32mto 121 . . . . . . . . . . 11 |- -. (y = 1o /\ y = (/))
3433pm2.21i 93 . . . . . . . . . 10 |- ((y = 1o /\ y = (/)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
3534ad2ant2rl 447 . . . . . . . . 9 |- (((y = 1o /\ z = (/)) /\ (x = 1o /\ y = (/))) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
3635expcom 403 . . . . . . . 8 |- ((x = 1o /\ y = (/)) -> ((y = 1o /\ z = (/)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
3734ad2ant2rl 447 . . . . . . . . 9 |- (((y = 1o /\ z = 2o) /\ (x = 1o /\ y = (/))) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
3837expcom 403 . . . . . . . 8 |- ((x = 1o /\ y = (/)) -> ((y = 1o /\ z = 2o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
39 3mix2 1046 . . . . . . . . . 10 |- ((x = 1o /\ z = 2o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
4039ad2ant2rl 447 . . . . . . . . 9 |- (((x = 1o /\ y = (/)) /\ (y = (/) /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
4140ex 402 . . . . . . . 8 |- ((x = 1o /\ y = (/)) -> ((y = (/) /\ z = 2o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
4236, 38, 413jaod 1161 . . . . . . 7 |- ((x = 1o /\ y = (/)) -> (((y = 1o /\ z = (/)) \/ (y = 1o /\ z = 2o) \/ (y = (/) /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
43 eqtr2 1905 . . . . . . . . . . . 12 |- ((y = 2o /\ y = 1o) -> 2o = 1o)
4414, 43mto 121 . . . . . . . . . . 11 |- -. (y = 2o /\ y = 1o)
4544pm2.21i 93 . . . . . . . . . 10 |- ((y = 2o /\ y = 1o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
4645ad2ant2lr 446 . . . . . . . . 9 |- (((x = 1o /\ y = 2o) /\ (y = 1o /\ z = (/))) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
4746ex 402 . . . . . . . 8 |- ((x = 1o /\ y = 2o) -> ((y = 1o /\ z = (/)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
4845ad2ant2lr 446 . . . . . . . . 9 |- (((x = 1o /\ y = 2o) /\ (y = 1o /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
4948ex 402 . . . . . . . 8 |- ((x = 1o /\ y = 2o) -> ((y = 1o /\ z = 2o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
50 eqtr2 1905 . . . . . . . . . . . 12 |- ((y = 2o /\ y = (/)) -> 2o = (/))
5120, 50mto 121 . . . . . . . . . . 11 |- -. (y = 2o /\ y = (/))
5251pm2.21i 93 . . . . . . . . . 10 |- ((y = 2o /\ y = (/)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
5352ad2ant2lr 446 . . . . . . . . 9 |- (((x = 1o /\ y = 2o) /\ (y = (/) /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
5453ex 402 . . . . . . . 8 |- ((x = 1o /\ y = 2o) -> ((y = (/) /\ z = 2o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
5547, 49, 543jaod 1161 . . . . . . 7 |- ((x = 1o /\ y = 2o) -> (((y = 1o /\ z = (/)) \/ (y = 1o /\ z = 2o) \/ (y = (/) /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
5645ad2ant2lr 446 . . . . . . . . 9 |- (((x = (/) /\ y = 2o) /\ (y = 1o /\ z = (/))) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
5756ex 402 . . . . . . . 8 |- ((x = (/) /\ y = 2o) -> ((y = 1o /\ z = (/)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
5845ad2ant2lr 446 . . . . . . . . 9 |- (((x = (/) /\ y = 2o) /\ (y = 1o /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
5958ex 402 . . . . . . . 8 |- ((x = (/) /\ y = 2o) -> ((y = 1o /\ z = 2o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
6052ad2ant2lr 446 . . . . . . . . 9 |- (((x = (/) /\ y = 2o) /\ (y = (/) /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
6160ex 402 . . . . . . . 8 |- ((x = (/) /\ y = 2o) -> ((y = (/) /\ z = 2o) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
6257, 59, 613jaod 1161 . . . . . . 7 |- ((x = (/) /\ y = 2o) -> (((y = 1o /\ z = (/)) \/ (y = 1o /\ z = 2o) \/ (y = (/) /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
6342, 55, 623jaoi 1160 . . . . . 6 |- (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) -> (((y = 1o /\ z = (/)) \/ (y = 1o /\ z = 2o) \/ (y = (/) /\ z = 2o)) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o))))
6463imp 377 . . . . 5 |- ((((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) /\ ((y = 1o /\ z = (/)) \/ (y = 1o /\ z = 2o) \/ (y = (/) /\ z = 2o))) -> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
65 visset 2295 . . . . . . 7 |- y e. _V
6625, 65, 26, 28, 28brtp 13830 . . . . . 6 |- (x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}y <-> ((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)))
67 visset 2295 . . . . . . 7 |- z e. _V
6865, 67, 26, 28, 28brtp 13830 . . . . . 6 |- (y{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}z <-> ((y = 1o /\ z = (/)) \/ (y = 1o /\ z = 2o) \/ (y = (/) /\ z = 2o)))
6966, 68anbi12i 540 . . . . 5 |- ((x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}y /\ y{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}z) <-> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) /\ ((y = 1o /\ z = (/)) \/ (y = 1o /\ z = 2o) \/ (y = (/) /\ z = 2o))))
7025, 67, 26, 28, 28brtp 13830 . . . . 5 |- (x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}z <-> ((x = 1o /\ z = (/)) \/ (x = 1o /\ z = 2o) \/ (x = (/) /\ z = 2o)))
7164, 69, 703imtr4i 236 . . . 4 |- ((x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}y /\ y{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}z) -> x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}z)
7271a1i 8 . . 3 |- ((x e. {1o, 2o, (/)} /\ y e. {1o, 2o, (/)} /\ z e. {1o, 2o, (/)}) -> ((x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}y /\ y{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}z) -> x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}z))
73 eqtr3 1907 . . . . . . . . 9 |- ((x = 1o /\ y = 1o) -> x = y)
74733mix2d 13813 . . . . . . . 8 |- ((x = 1o /\ y = 1o) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
7574ex 402 . . . . . . 7 |- (x = 1o -> (y = 1o -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
76 3mix2 1046 . . . . . . . . 9 |- ((x = 1o /\ y = 2o) -> ((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)))
77763mix1d 13812 . . . . . . . 8 |- ((x = 1o /\ y = 2o) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
7877ex 402 . . . . . . 7 |- (x = 1o -> (y = 2o -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
79 3mix1 1045 . . . . . . . . 9 |- ((x = 1o /\ y = (/)) -> ((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)))
80793mix1d 13812 . . . . . . . 8 |- ((x = 1o /\ y = (/)) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
8180ex 402 . . . . . . 7 |- (x = 1o -> (y = (/) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
8275, 78, 813jaod 1161 . . . . . 6 |- (x = 1o -> ((y = 1o \/ y = 2o \/ y = (/)) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
83 3mix2 1046 . . . . . . . . 9 |- ((y = 1o /\ x = 2o) -> ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))
84833mix3d 13814 . . . . . . . 8 |- ((y = 1o /\ x = 2o) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
8584expcom 403 . . . . . . 7 |- (x = 2o -> (y = 1o -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
86 eqtr3 1907 . . . . . . . . 9 |- ((x = 2o /\ y = 2o) -> x = y)
87863mix2d 13813 . . . . . . . 8 |- ((x = 2o /\ y = 2o) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
8887ex 402 . . . . . . 7 |- (x = 2o -> (y = 2o -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
89 3mix3 1047 . . . . . . . . 9 |- ((y = (/) /\ x = 2o) -> ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))
90893mix3d 13814 . . . . . . . 8 |- ((y = (/) /\ x = 2o) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
9190expcom 403 . . . . . . 7 |- (x = 2o -> (y = (/) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
9285, 88, 913jaod 1161 . . . . . 6 |- (x = 2o -> ((y = 1o \/ y = 2o \/ y = (/)) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
93 3mix1 1045 . . . . . . . . 9 |- ((y = 1o /\ x = (/)) -> ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))
94933mix3d 13814 . . . . . . . 8 |- ((y = 1o /\ x = (/)) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
9594expcom 403 . . . . . . 7 |- (x = (/) -> (y = 1o -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
96 3mix3 1047 . . . . . . . . 9 |- ((x = (/) /\ y = 2o) -> ((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)))
97963mix1d 13812 . . . . . . . 8 |- ((x = (/) /\ y = 2o) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
9897ex 402 . . . . . . 7 |- (x = (/) -> (y = 2o -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
99 eqtr3 1907 . . . . . . . . 9 |- ((x = (/) /\ y = (/)) -> x = y)
100993mix2d 13813 . . . . . . . 8 |- ((x = (/) /\ y = (/)) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
101100ex 402 . . . . . . 7 |- (x = (/) -> (y = (/) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
10295, 98, 1013jaod 1161 . . . . . 6 |- (x = (/) -> ((y = 1o \/ y = 2o \/ y = (/)) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
10382, 92, 1023jaoi 1160 . . . . 5 |- ((x = 1o \/ x = 2o \/ x = (/)) -> ((y = 1o \/ y = 2o \/ y = (/)) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))))
104103imp 377 . . . 4 |- (((x = 1o \/ x = 2o \/ x = (/)) /\ (y = 1o \/ y = 2o \/ y = (/))) -> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
10525eltp 3074 . . . . 5 |- (x e. {1o, 2o, (/)} <-> (x = 1o \/ x = 2o \/ x = (/)))
10665eltp 3074 . . . . 5 |- (y e. {1o, 2o, (/)} <-> (y = 1o \/ y = 2o \/ y = (/)))
107105, 106anbi12i 540 . . . 4 |- ((x e. {1o, 2o, (/)} /\ y e. {1o, 2o, (/)}) <-> ((x = 1o \/ x = 2o \/ x = (/)) /\ (y = 1o \/ y = 2o \/ y = (/))))
108 biid 187 . . . . 5 |- (x = y <-> x = y)
10965, 25, 26, 28, 28brtp 13830 . . . . 5 |- (y{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}x <-> ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o)))
11066, 108, 1093orbi123i 1057 . . . 4 |- ((x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}y \/ x = y \/ y{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}x) <-> (((x = 1o /\ y = (/)) \/ (x = 1o /\ y = 2o) \/ (x = (/) /\ y = 2o)) \/ x = y \/ ((y = 1o /\ x = (/)) \/ (y = 1o /\ x = 2o) \/ (y = (/) /\ x = 2o))))
111104, 107, 1103imtr4i 236 . . 3 |- ((x e. {1o, 2o, (/)} /\ y e. {1o, 2o, (/)}) -> (x{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}y \/ x = y \/ y{<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.}x))
11231, 72, 111itlso 3619 . 2 |- {<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.} Or {1o, 2o, (/)}
113 df-tp 3052 . . 3 |- {1o, 2o, (/)} = ({1o, 2o} u. {(/)})
114 soeq2 3609 . . 3 |- ({1o, 2o, (/)} = ({1o, 2o} u. {(/)}) -> ({<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.} Or {1o, 2o, (/)} <-> {<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.} Or ({1o, 2o} u. {(/)})))
115113, 114ax-mp 7 . 2 |- ({<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.} Or {1o, 2o, (/)} <-> {<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.} Or ({1o, 2o} u. {(/)}))
116112, 115mpbi 206 1 |- {<.1o, (/)>., <.1o, 2o>., <.(/), 2o>.} Or ({1o, 2o} u. {(/)})
Colors of variables: wff set class
Syntax hints:  -. wn 2   -> wi 3   <-> wb 163   /\ wa 240   \/ w3o 857   /\ w3a 858   = wceq 1298   e. wcel 1300   =/= wne 2017   u. cun 2591  (/)c0 2875  {csn 3044  {cpr 3045  <.cop 3046  {ctp 3051   class class class wbr 3338   Or wor 3590  Oncon0 3657  suc csuc 3659  1oc1o 5172  2oc2o 5173
This theorem is referenced by:  axsltso 14007
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 1304  ax-gen 1305  ax-8 1306  ax-9 1307  ax-10 1308  ax-11 1309  ax-12 1310  ax-13 1311  ax-14 1312  ax-17 1317  ax-4 1319  ax-5o 1321  ax-6o 1324  ax-9o 1481  ax-10o 1500  ax-16 1580  ax-11o 1588  ax-ext 1865  ax-sep 3438  ax-nul 3445  ax-pow 3481  ax-pr 3524  ax-un 3790
This theorem depends on definitions:  df-bi 164  df-or 241  df-an 242  df-3or 859  df-3an 860  df-ex 1327  df-sb 1536  df-eu 1775  df-mo 1776  df-clab 1872  df-cleq 1877  df-clel 1880  df-ne 2019  df-ral 2109  df-rex 2110  df-v 2294  df-dif 2597  df-un 2600  df-in 2603  df-ss 2605  df-pss 2607  df-nul 2876  df-pw 3035  df-sn 3049  df-pr 3050  df-tp 3052  df-op 3053  df-uni 3178  df-br 3339  df-opab 3396  df-tr 3412  df-eprel 3583  df-po 3591  df-so 3604  df-fr 3625  df-we 3644  df-ord 3660  df-on 3661  df-suc 3663  df-1o 5177  df-2o 5178
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