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Theorem genpassu 7234
Description: Associativity of upper cuts. Lemma for genpassg 7235. (Contributed by Jim Kingdon, 11-Dec-2019.)
Hypotheses
Ref Expression
genpelvl.1 |- F = ( w e. P. , v e. P. |-> <. { x e. Q. | E. y e. Q. E. z e. Q. ( y e. ( 1st ` w ) /\ z e. ( 1st ` v ) /\ x = ( y G z ) ) } , { x e. Q. | E. y e. Q. E. z e. Q. ( y e. ( 2nd ` w ) /\ z e. ( 2nd ` v ) /\ x = ( y G z ) ) } >. )
genpelvl.2 |- ( ( y e. Q. /\ z e. Q. ) -> ( y G z ) e. Q. )
genpassg.4 |- dom F = ( P. X. P. )
genpassg.5 |- ( ( f e. P. /\ g e. P. ) -> ( f F g ) e. P. )
genpassg.6 |- ( ( f e. Q. /\ g e. Q. /\ h e. Q. ) -> ( ( f G g ) G h ) = ( f G ( g G h ) ) )
Assertion
Ref Expression
genpassu |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( 2nd ` ( ( A F B ) F C ) ) = ( 2nd ` ( A F ( B F C ) ) ) )
Distinct variable groups:   x, y, z, f, g, h, w, v, A   x, B, y, z, f, g, h, w, v   x, G, y, z, f, g, h, w, v   f, F, g   C, f, g, h, v, w, x, y, z   h, F, v, w, x, y, z
Proof of Theorem genpassu
Dummy variable t is distinct from all other variables.
StepHypRef Expression
1 prop 7184 . . . . . . . . 9 |- ( A e. P. -> <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. )
2 elprnqu 7191 . . . . . . . . 9 |- ( ( <. ( 1st ` A ) , ( 2nd ` A ) >. e. P. /\ f e. ( 2nd ` A ) ) -> f e. Q. )
31, 2sylan 279 . . . . . . . 8 |- ( ( A e. P. /\ f e. ( 2nd ` A ) ) -> f e. Q. )
4 prop 7184 . . . . . . . . . . . . . . . 16 |- ( B e. P. -> <. ( 1st ` B ) , ( 2nd ` B ) >. e. P. )
5 elprnqu 7191 . . . . . . . . . . . . . . . 16 |- ( ( <. ( 1st ` B ) , ( 2nd ` B ) >. e. P. /\ g e. ( 2nd ` B ) ) -> g e. Q. )
64, 5sylan 279 . . . . . . . . . . . . . . 15 |- ( ( B e. P. /\ g e. ( 2nd ` B ) ) -> g e. Q. )
7 r19.41v 2545 . . . . . . . . . . . . . . . . 17 |- ( E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( f G t ) ) <-> ( E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) )
8 prop 7184 . . . . . . . . . . . . . . . . . . . . 21 |- ( C e. P. -> <. ( 1st ` C ) , ( 2nd ` C ) >. e. P. )
9 elprnqu 7191 . . . . . . . . . . . . . . . . . . . . 21 |- ( ( <. ( 1st ` C ) , ( 2nd ` C ) >. e. P. /\ h e. ( 2nd ` C ) ) -> h e. Q. )
108, 9sylan 279 . . . . . . . . . . . . . . . . . . . 20 |- ( ( C e. P. /\ h e. ( 2nd ` C ) ) -> h e. Q. )
11 oveq2 5714 . . . . . . . . . . . . . . . . . . . . . . . . . 26 |- ( t = ( g G h ) -> ( f G t ) = ( f G ( g G h ) ) )
1211adantr 272 . . . . . . . . . . . . . . . . . . . . . . . . 25 |- ( ( t = ( g G h ) /\ ( f e. Q. /\ g e. Q. /\ h e. Q. ) ) -> ( f G t ) = ( f G ( g G h ) ) )
13 genpassg.6 . . . . . . . . . . . . . . . . . . . . . . . . . 26 |- ( ( f e. Q. /\ g e. Q. /\ h e. Q. ) -> ( ( f G g ) G h ) = ( f G ( g G h ) ) )
1413adantl 273 . . . . . . . . . . . . . . . . . . . . . . . . 25 |- ( ( t = ( g G h ) /\ ( f e. Q. /\ g e. Q. /\ h e. Q. ) ) -> ( ( f G g ) G h ) = ( f G ( g G h ) ) )
1512, 14eqtr4d 2135 . . . . . . . . . . . . . . . . . . . . . . . 24 |- ( ( t = ( g G h ) /\ ( f e. Q. /\ g e. Q. /\ h e. Q. ) ) -> ( f G t ) = ( ( f G g ) G h ) )
1615eqeq2d 2111 . . . . . . . . . . . . . . . . . . . . . . 23 |- ( ( t = ( g G h ) /\ ( f e. Q. /\ g e. Q. /\ h e. Q. ) ) -> ( x = ( f G t ) <-> x = ( ( f G g ) G h ) ) )
1716expcom 115 . . . . . . . . . . . . . . . . . . . . . 22 |- ( ( f e. Q. /\ g e. Q. /\ h e. Q. ) -> ( t = ( g G h ) -> ( x = ( f G t ) <-> x = ( ( f G g ) G h ) ) ) )
1817pm5.32d 441 . . . . . . . . . . . . . . . . . . . . 21 |- ( ( f e. Q. /\ g e. Q. /\ h e. Q. ) -> ( ( t = ( g G h ) /\ x = ( f G t ) ) <-> ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
19183expa 1149 . . . . . . . . . . . . . . . . . . . 20 |- ( ( ( f e. Q. /\ g e. Q. ) /\ h e. Q. ) -> ( ( t = ( g G h ) /\ x = ( f G t ) ) <-> ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
2010, 19sylan2 282 . . . . . . . . . . . . . . . . . . 19 |- ( ( ( f e. Q. /\ g e. Q. ) /\ ( C e. P. /\ h e. ( 2nd ` C ) ) ) -> ( ( t = ( g G h ) /\ x = ( f G t ) ) <-> ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
2120anassrs 395 . . . . . . . . . . . . . . . . . 18 |- ( ( ( ( f e. Q. /\ g e. Q. ) /\ C e. P. ) /\ h e. ( 2nd ` C ) ) -> ( ( t = ( g G h ) /\ x = ( f G t ) ) <-> ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
2221rexbidva 2393 . . . . . . . . . . . . . . . . 17 |- ( ( ( f e. Q. /\ g e. Q. ) /\ C e. P. ) -> ( E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( f G t ) ) <-> E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
237, 22syl5rbbr 194 . . . . . . . . . . . . . . . 16 |- ( ( ( f e. Q. /\ g e. Q. ) /\ C e. P. ) -> ( E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> ( E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
2423an32s 538 . . . . . . . . . . . . . . 15 |- ( ( ( f e. Q. /\ C e. P. ) /\ g e. Q. ) -> ( E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> ( E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
256, 24sylan2 282 . . . . . . . . . . . . . 14 |- ( ( ( f e. Q. /\ C e. P. ) /\ ( B e. P. /\ g e. ( 2nd ` B ) ) ) -> ( E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> ( E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
2625anassrs 395 . . . . . . . . . . . . 13 |- ( ( ( ( f e. Q. /\ C e. P. ) /\ B e. P. ) /\ g e. ( 2nd ` B ) ) -> ( E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> ( E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
2726rexbidva 2393 . . . . . . . . . . . 12 |- ( ( ( f e. Q. /\ C e. P. ) /\ B e. P. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> E. g e. ( 2nd ` B ) ( E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
28 r19.41v 2545 . . . . . . . . . . . 12 |- ( E. g e. ( 2nd ` B ) ( E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) <-> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) )
2927, 28syl6bb 195 . . . . . . . . . . 11 |- ( ( ( f e. Q. /\ C e. P. ) /\ B e. P. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
3029an31s 540 . . . . . . . . . 10 |- ( ( ( B e. P. /\ C e. P. ) /\ f e. Q. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
3130exbidv 1764 . . . . . . . . 9 |- ( ( ( B e. P. /\ C e. P. ) /\ f e. Q. ) -> ( E. t E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> E. t ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
32 genpelvl.2 . . . . . . . . . . . . . . . . . . . . . . . 24 |- ( ( y e. Q. /\ z e. Q. ) -> ( y G z ) e. Q. )
3332caovcl 5857 . . . . . . . . . . . . . . . . . . . . . . 23 |- ( ( g e. Q. /\ h e. Q. ) -> ( g G h ) e. Q. )
34 elisset 2655 . . . . . . . . . . . . . . . . . . . . . . 23 |- ( ( g G h ) e. Q. -> E. t t = ( g G h ) )
3533, 34syl 14 . . . . . . . . . . . . . . . . . . . . . 22 |- ( ( g e. Q. /\ h e. Q. ) -> E. t t = ( g G h ) )
3635biantrurd 301 . . . . . . . . . . . . . . . . . . . . 21 |- ( ( g e. Q. /\ h e. Q. ) -> ( x = ( ( f G g ) G h ) <-> ( E. t t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
37 19.41v 1841 . . . . . . . . . . . . . . . . . . . . 21 |- ( E. t ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> ( E. t t = ( g G h ) /\ x = ( ( f G g ) G h ) ) )
3836, 37syl6bbr 197 . . . . . . . . . . . . . . . . . . . 20 |- ( ( g e. Q. /\ h e. Q. ) -> ( x = ( ( f G g ) G h ) <-> E. t ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
3910, 38sylan2 282 . . . . . . . . . . . . . . . . . . 19 |- ( ( g e. Q. /\ ( C e. P. /\ h e. ( 2nd ` C ) ) ) -> ( x = ( ( f G g ) G h ) <-> E. t ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
4039anassrs 395 . . . . . . . . . . . . . . . . . 18 |- ( ( ( g e. Q. /\ C e. P. ) /\ h e. ( 2nd ` C ) ) -> ( x = ( ( f G g ) G h ) <-> E. t ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
4140rexbidva 2393 . . . . . . . . . . . . . . . . 17 |- ( ( g e. Q. /\ C e. P. ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. h e. ( 2nd ` C ) E. t ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
42 rexcom4 2664 . . . . . . . . . . . . . . . . 17 |- ( E. h e. ( 2nd ` C ) E. t ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) )
4341, 42syl6bb 195 . . . . . . . . . . . . . . . 16 |- ( ( g e. Q. /\ C e. P. ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
4443ancoms 266 . . . . . . . . . . . . . . 15 |- ( ( C e. P. /\ g e. Q. ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
456, 44sylan2 282 . . . . . . . . . . . . . 14 |- ( ( C e. P. /\ ( B e. P. /\ g e. ( 2nd ` B ) ) ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
4645anassrs 395 . . . . . . . . . . . . 13 |- ( ( ( C e. P. /\ B e. P. ) /\ g e. ( 2nd ` B ) ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
4746rexbidva 2393 . . . . . . . . . . . 12 |- ( ( C e. P. /\ B e. P. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. g e. ( 2nd ` B ) E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
4847ancoms 266 . . . . . . . . . . 11 |- ( ( B e. P. /\ C e. P. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. g e. ( 2nd ` B ) E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
49 rexcom4 2664 . . . . . . . . . . 11 |- ( E. g e. ( 2nd ` B ) E. t E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) <-> E. t E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) )
5048, 49syl6bb 195 . . . . . . . . . 10 |- ( ( B e. P. /\ C e. P. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
5150adantr 272 . . . . . . . . 9 |- ( ( ( B e. P. /\ C e. P. ) /\ f e. Q. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) ( t = ( g G h ) /\ x = ( ( f G g ) G h ) ) ) )
52 df-rex 2381 . . . . . . . . . . 11 |- ( E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. t ( t e. ( 2nd ` ( B F C ) ) /\ x = ( f G t ) ) )
53 genpelvl.1 . . . . . . . . . . . . . 14 |- F = ( w e. P. , v e. P. |-> <. { x e. Q. | E. y e. Q. E. z e. Q. ( y e. ( 1st ` w ) /\ z e. ( 1st ` v ) /\ x = ( y G z ) ) } , { x e. Q. | E. y e. Q. E. z e. Q. ( y e. ( 2nd ` w ) /\ z e. ( 2nd ` v ) /\ x = ( y G z ) ) } >. )
5453, 32genpelvu 7222 . . . . . . . . . . . . 13 |- ( ( B e. P. /\ C e. P. ) -> ( t e. ( 2nd ` ( B F C ) ) <-> E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) ) )
5554anbi1d 456 . . . . . . . . . . . 12 |- ( ( B e. P. /\ C e. P. ) -> ( ( t e. ( 2nd ` ( B F C ) ) /\ x = ( f G t ) ) <-> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
5655exbidv 1764 . . . . . . . . . . 11 |- ( ( B e. P. /\ C e. P. ) -> ( E. t ( t e. ( 2nd ` ( B F C ) ) /\ x = ( f G t ) ) <-> E. t ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
5752, 56syl5bb 191 . . . . . . . . . 10 |- ( ( B e. P. /\ C e. P. ) -> ( E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. t ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
5857adantr 272 . . . . . . . . 9 |- ( ( ( B e. P. /\ C e. P. ) /\ f e. Q. ) -> ( E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. t ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) t = ( g G h ) /\ x = ( f G t ) ) ) )
5931, 51, 583bitr4rd 220 . . . . . . . 8 |- ( ( ( B e. P. /\ C e. P. ) /\ f e. Q. ) -> ( E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
603, 59sylan2 282 . . . . . . 7 |- ( ( ( B e. P. /\ C e. P. ) /\ ( A e. P. /\ f e. ( 2nd ` A ) ) ) -> ( E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
6160anassrs 395 . . . . . 6 |- ( ( ( ( B e. P. /\ C e. P. ) /\ A e. P. ) /\ f e. ( 2nd ` A ) ) -> ( E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
6261rexbidva 2393 . . . . 5 |- ( ( ( B e. P. /\ C e. P. ) /\ A e. P. ) -> ( E. f e. ( 2nd ` A ) E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
6362ancoms 266 . . . 4 |- ( ( A e. P. /\ ( B e. P. /\ C e. P. ) ) -> ( E. f e. ( 2nd ` A ) E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
64633impb 1145 . . 3 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( E. f e. ( 2nd ` A ) E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) <-> E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
65 genpassg.5 . . . . . 6 |- ( ( f e. P. /\ g e. P. ) -> ( f F g ) e. P. )
6665caovcl 5857 . . . . 5 |- ( ( B e. P. /\ C e. P. ) -> ( B F C ) e. P. )
6753, 32genpelvu 7222 . . . . 5 |- ( ( A e. P. /\ ( B F C ) e. P. ) -> ( x e. ( 2nd ` ( A F ( B F C ) ) ) <-> E. f e. ( 2nd ` A ) E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) ) )
6866, 67sylan2 282 . . . 4 |- ( ( A e. P. /\ ( B e. P. /\ C e. P. ) ) -> ( x e. ( 2nd ` ( A F ( B F C ) ) ) <-> E. f e. ( 2nd ` A ) E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) ) )
69683impb 1145 . . 3 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( x e. ( 2nd ` ( A F ( B F C ) ) ) <-> E. f e. ( 2nd ` A ) E. t e. ( 2nd ` ( B F C ) ) x = ( f G t ) ) )
70 df-rex 2381 . . . . 5 |- ( E. t e. ( 2nd ` ( A F B ) ) E. h e. ( 2nd ` C ) x = ( t G h ) <-> E. t ( t e. ( 2nd ` ( A F B ) ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
7153, 32genpelvu 7222 . . . . . . . 8 |- ( ( A e. P. /\ B e. P. ) -> ( t e. ( 2nd ` ( A F B ) ) <-> E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) ) )
72713adant3 969 . . . . . . 7 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( t e. ( 2nd ` ( A F B ) ) <-> E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) ) )
7372anbi1d 456 . . . . . 6 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( ( t e. ( 2nd ` ( A F B ) ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
7473exbidv 1764 . . . . 5 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( E. t ( t e. ( 2nd ` ( A F B ) ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> E. t ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
7570, 74syl5bb 191 . . . 4 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( E. t e. ( 2nd ` ( A F B ) ) E. h e. ( 2nd ` C ) x = ( t G h ) <-> E. t ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
7665caovcl 5857 . . . . . 6 |- ( ( A e. P. /\ B e. P. ) -> ( A F B ) e. P. )
7753, 32genpelvu 7222 . . . . . 6 |- ( ( ( A F B ) e. P. /\ C e. P. ) -> ( x e. ( 2nd ` ( ( A F B ) F C ) ) <-> E. t e. ( 2nd ` ( A F B ) ) E. h e. ( 2nd ` C ) x = ( t G h ) ) )
7876, 77sylan 279 . . . . 5 |- ( ( ( A e. P. /\ B e. P. ) /\ C e. P. ) -> ( x e. ( 2nd ` ( ( A F B ) F C ) ) <-> E. t e. ( 2nd ` ( A F B ) ) E. h e. ( 2nd ` C ) x = ( t G h ) ) )
79783impa 1144 . . . 4 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( x e. ( 2nd ` ( ( A F B ) F C ) ) <-> E. t e. ( 2nd ` ( A F B ) ) E. h e. ( 2nd ` C ) x = ( t G h ) ) )
8032caovcl 5857 . . . . . . . . . . . . . . . . . . 19 |- ( ( f e. Q. /\ g e. Q. ) -> ( f G g ) e. Q. )
81 elisset 2655 . . . . . . . . . . . . . . . . . . 19 |- ( ( f G g ) e. Q. -> E. t t = ( f G g ) )
8280, 81syl 14 . . . . . . . . . . . . . . . . . 18 |- ( ( f e. Q. /\ g e. Q. ) -> E. t t = ( f G g ) )
8382biantrurd 301 . . . . . . . . . . . . . . . . 17 |- ( ( f e. Q. /\ g e. Q. ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> ( E. t t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) ) )
84 oveq1 5713 . . . . . . . . . . . . . . . . . . . . . 22 |- ( t = ( f G g ) -> ( t G h ) = ( ( f G g ) G h ) )
8584eqeq2d 2111 . . . . . . . . . . . . . . . . . . . . 21 |- ( t = ( f G g ) -> ( x = ( t G h ) <-> x = ( ( f G g ) G h ) ) )
8685rexbidv 2397 . . . . . . . . . . . . . . . . . . . 20 |- ( t = ( f G g ) -> ( E. h e. ( 2nd ` C ) x = ( t G h ) <-> E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
8786pm5.32i 445 . . . . . . . . . . . . . . . . . . 19 |- ( ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
8887exbii 1552 . . . . . . . . . . . . . . . . . 18 |- ( E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
89 19.41v 1841 . . . . . . . . . . . . . . . . . 18 |- ( E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) <-> ( E. t t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
9088, 89bitri 183 . . . . . . . . . . . . . . . . 17 |- ( E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> ( E. t t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
9183, 90syl6bbr 197 . . . . . . . . . . . . . . . 16 |- ( ( f e. Q. /\ g e. Q. ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
926, 91sylan2 282 . . . . . . . . . . . . . . 15 |- ( ( f e. Q. /\ ( B e. P. /\ g e. ( 2nd ` B ) ) ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
9392anassrs 395 . . . . . . . . . . . . . 14 |- ( ( ( f e. Q. /\ B e. P. ) /\ g e. ( 2nd ` B ) ) -> ( E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
9493rexbidva 2393 . . . . . . . . . . . . 13 |- ( ( f e. Q. /\ B e. P. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. g e. ( 2nd ` B ) E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
95 rexcom4 2664 . . . . . . . . . . . . 13 |- ( E. g e. ( 2nd ` B ) E. t ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> E. t E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
9694, 95syl6bb 195 . . . . . . . . . . . 12 |- ( ( f e. Q. /\ B e. P. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
9796ancoms 266 . . . . . . . . . . 11 |- ( ( B e. P. /\ f e. Q. ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
983, 97sylan2 282 . . . . . . . . . 10 |- ( ( B e. P. /\ ( A e. P. /\ f e. ( 2nd ` A ) ) ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
9998anassrs 395 . . . . . . . . 9 |- ( ( ( B e. P. /\ A e. P. ) /\ f e. ( 2nd ` A ) ) -> ( E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
10099rexbidva 2393 . . . . . . . 8 |- ( ( B e. P. /\ A e. P. ) -> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. f e. ( 2nd ` A ) E. t E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
101 rexcom4 2664 . . . . . . . 8 |- ( E. f e. ( 2nd ` A ) E. t E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> E. t E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
102100, 101syl6bb 195 . . . . . . 7 |- ( ( B e. P. /\ A e. P. ) -> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
103 r19.41v 2545 . . . . . . . . . 10 |- ( E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> ( E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
104103rexbii 2401 . . . . . . . . 9 |- ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> E. f e. ( 2nd ` A ) ( E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
105 r19.41v 2545 . . . . . . . . 9 |- ( E. f e. ( 2nd ` A ) ( E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
106104, 105bitri 183 . . . . . . . 8 |- ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
107106exbii 1552 . . . . . . 7 |- ( E. t E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) ( t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) <-> E. t ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) )
108102, 107syl6bb 195 . . . . . 6 |- ( ( B e. P. /\ A e. P. ) -> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
109108ancoms 266 . . . . 5 |- ( ( A e. P. /\ B e. P. ) -> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
1101093adant3 969 . . . 4 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) <-> E. t ( E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) t = ( f G g ) /\ E. h e. ( 2nd ` C ) x = ( t G h ) ) ) )
11175, 79, 1103bitr4d 219 . . 3 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( x e. ( 2nd ` ( ( A F B ) F C ) ) <-> E. f e. ( 2nd ` A ) E. g e. ( 2nd ` B ) E. h e. ( 2nd ` C ) x = ( ( f G g ) G h ) ) )
11264, 69, 1113bitr4rd 220 . 2 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( x e. ( 2nd ` ( ( A F B ) F C ) ) <-> x e. ( 2nd ` ( A F ( B F C ) ) ) ) )
113112eqrdv 2098 1 |- ( ( A e. P. /\ B e. P. /\ C e. P. ) -> ( 2nd ` ( ( A F B ) F C ) ) = ( 2nd ` ( A F ( B F C ) ) ) )
Colors of variables: wff set class
Syntax hints:   -> wi 4   /\ wa 103   <-> wb 104   /\ w3a 930   = wceq 1299   E.wex 1436   e. wcel 1448   E.wrex 2376   {crab 2379   <.cop 3477   X. cxp 4475   dom cdm 4477   ` cfv 5059  (class class class)co 5706   e. cmpo 5708   1stc1st 5967   2ndc2nd 5968   Q.cnq 6989   P.cnp 7000
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 584  ax-in2 585  ax-io 671  ax-5 1391  ax-7 1392  ax-gen 1393  ax-ie1 1437  ax-ie2 1438  ax-8 1450  ax-10 1451  ax-11 1452  ax-i12 1453  ax-bndl 1454  ax-4 1455  ax-13 1459  ax-14 1460  ax-17 1474  ax-i9 1478  ax-ial 1482  ax-i5r 1483  ax-ext 2082  ax-coll 3983  ax-sep 3986  ax-pow 4038  ax-pr 4069  ax-un 4293  ax-setind 4390  ax-iinf 4440
This theorem depends on definitions:  df-bi 116  df-3an 932  df-tru 1302  df-fal 1305  df-nf 1405  df-sb 1704  df-eu 1963  df-mo 1964  df-clab 2087  df-cleq 2093  df-clel 2096  df-nfc 2229  df-ne 2268  df-ral 2380  df-rex 2381  df-reu 2382  df-rab 2384  df-v 2643  df-sbc 2863  df-csb 2956  df-dif 3023  df-un 3025  df-in 3027  df-ss 3034  df-pw 3459  df-sn 3480  df-pr 3481  df-op 3483  df-uni 3684  df-int 3719  df-iun 3762  df-br 3876  df-opab 3930  df-mpt 3931  df-id 4153  df-iom 4443  df-xp 4483  df-rel 4484  df-cnv 4485  df-co 4486  df-dm 4487  df-rn 4488  df-res 4489  df-ima 4490  df-iota 5024  df-fun 5061  df-fn 5062  df-f 5063  df-f1 5064  df-fo 5065  df-f1o 5066  df-fv 5067  df-ov 5709  df-oprab 5710  df-mpo 5711  df-1st 5969  df-2nd 5970  df-qs 6365  df-ni 7013  df-nqqs 7057  df-inp 7175
This theorem is referenced by:  genpassg  7235
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