Theorem htpycn 22772

Description: A homotopy is a continuous function. (Contributed by Mario Carneiro, 22-Feb-2015.)

Hypotheses

Ref	Expression
ishtpy.1	|- ( ph -> J e. (TopOn ` X ) )
ishtpy.3	|- ( ph -> F e. ( J Cn K ) )
ishtpy.4	|- ( ph -> G e. ( J Cn K ) )

Assertion

Ref	Expression
htpycn	|- ( ph -> ( F ( J Htpy K ) G ) C_ ( ( J tX II ) Cn K ) )

Proof of Theorem htpycn

Dummy variables s h are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ishtpy.1	. . . 4 |- ( ph -> J e. (TopOn ` X ) )
2		ishtpy.3	. . . 4 |- ( ph -> F e. ( J Cn K ) )
3		ishtpy.4	. . . 4 |- ( ph -> G e. ( J Cn K ) )
4	1, 2, 3	ishtpy 22771	. . 3 |- ( ph -> ( h e. ( F ( J Htpy K ) G ) <-> ( h e. ( ( J tX II ) Cn K ) /\ A. s e. X ( ( s h 0 ) = ( F ` s ) /\ ( s h 1 ) = ( G ` s ) ) ) ) )
5		simpl 473	. . 3 |- ( ( h e. ( ( J tX II ) Cn K ) /\ A. s e. X ( ( s h 0 ) = ( F ` s ) /\ ( s h 1 ) = ( G ` s ) ) ) -> h e. ( ( J tX II ) Cn K ) )
6	4, 5	syl6bi 243	. 2 |- ( ph -> ( h e. ( F ( J Htpy K ) G ) -> h e. ( ( J tX II ) Cn K ) ) )
7	6	ssrdv 3609	1 |- ( ph -> ( F ( J Htpy K ) G ) C_ ( ( J tX II ) Cn K ) )

Syntax hints:   -> wi 4   /\ wa 384   = wceq 1483   e. wcel 1990   A.wral 2912   C_ wss 3574   ` cfv 5888  (class class class)co 6650   0cc0 9936   1c1 9937  TopOnctopon 20715   Cn ccn 21028   tX ctx 21363   IIcii 22678   Htpy chtpy 22766

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-1st 7168  df-2nd 7169  df-map 7859  df-top 20699  df-topon 20716  df-cn 21031  df-htpy 22769

This theorem is referenced by:  htpycom  22775  htpyco1  22777  htpyco2  22778  htpycc  22779  phtpycn  22782