Theorem hmeoco 14788

Description: The composite of two homeomorphisms is a homeomorphism. (Contributed by FL, 9-Mar-2007.) (Proof shortened by Mario Carneiro, 23-Aug-2015.)

Assertion

Ref	Expression
hmeoco	|- ( ( F e. ( J Homeo K ) /\ G e. ( K Homeo L ) ) -> ( G o. F ) e. ( J Homeo L ) )

Proof of Theorem hmeoco

Step	Hyp	Ref	Expression
1		hmeocn 14777	. . 3 |- ( F e. ( J Homeo K ) -> F e. ( J Cn K ) )
2		hmeocn 14777	. . 3 |- ( G e. ( K Homeo L ) -> G e. ( K Cn L ) )
3		cnco 14693	. . 3 |- ( ( F e. ( J Cn K ) /\ G e. ( K Cn L ) ) -> ( G o. F ) e. ( J Cn L ) )
4	1, 2, 3	syl2an 289	. 2 |- ( ( F e. ( J Homeo K ) /\ G e. ( K Homeo L ) ) -> ( G o. F ) e. ( J Cn L ) )
5		cnvco 4863	. . 3 |- `' ( G o. F ) = ( `' F o. `' G )
6		hmeocnvcn 14778	. . . 4 |- ( G e. ( K Homeo L ) -> `' G e. ( L Cn K ) )
7		hmeocnvcn 14778	. . . 4 |- ( F e. ( J Homeo K ) -> `' F e. ( K Cn J ) )
8		cnco 14693	. . . 4 |- ( ( `' G e. ( L Cn K ) /\ `' F e. ( K Cn J ) ) -> ( `' F o. `' G ) e. ( L Cn J ) )
9	6, 7, 8	syl2anr 290	. . 3 |- ( ( F e. ( J Homeo K ) /\ G e. ( K Homeo L ) ) -> ( `' F o. `' G ) e. ( L Cn J ) )
10	5, 9	eqeltrid 2292	. 2 |- ( ( F e. ( J Homeo K ) /\ G e. ( K Homeo L ) ) -> `' ( G o. F ) e. ( L Cn J ) )
11		ishmeo 14776	. 2 |- ( ( G o. F ) e. ( J Homeo L ) <-> ( ( G o. F ) e. ( J Cn L ) /\ `' ( G o. F ) e. ( L Cn J ) ) )
12	4, 10, 11	sylanbrc 417	1 |- ( ( F e. ( J Homeo K ) /\ G e. ( K Homeo L ) ) -> ( G o. F ) e. ( J Homeo L ) )

Syntax hints:   -> wi 4   /\ wa 104   e. wcel 2176   `'ccnv 4674   o. ccom 4679  (class class class)co 5944   Cn ccn 14657   Homeochmeo 14772

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 711  ax-5 1470  ax-7 1471  ax-gen 1472  ax-ie1 1516  ax-ie2 1517  ax-8 1527  ax-10 1528  ax-11 1529  ax-i12 1530  ax-bndl 1532  ax-4 1533  ax-17 1549  ax-i9 1553  ax-ial 1557  ax-i5r 1558  ax-13 2178  ax-14 2179  ax-ext 2187  ax-sep 4162  ax-pow 4218  ax-pr 4253  ax-un 4480  ax-setind 4585

This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-fal 1379  df-nf 1484  df-sb 1786  df-eu 2057  df-mo 2058  df-clab 2192  df-cleq 2198  df-clel 2201  df-nfc 2337  df-ne 2377  df-ral 2489  df-rex 2490  df-rab 2493  df-v 2774  df-sbc 2999  df-csb 3094  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-pw 3618  df-sn 3639  df-pr 3640  df-op 3642  df-uni 3851  df-iun 3929  df-br 4045  df-opab 4106  df-mpt 4107  df-id 4340  df-xp 4681  df-rel 4682  df-cnv 4683  df-co 4684  df-dm 4685  df-rn 4686  df-res 4687  df-ima 4688  df-iota 5232  df-fun 5273  df-fn 5274  df-f 5275  df-fv 5279  df-ov 5947  df-oprab 5948  df-mpo 5949  df-1st 6226  df-2nd 6227  df-map 6737  df-top 14470  df-topon 14483  df-cn 14660  df-hmeo 14773

This theorem is referenced by: (None)