Theorem limciccioolb 39853

Description: The limit of a function at the lower bound of a closed interval only depends on the values in the inner open interval. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

Hypotheses

Ref	Expression
limciccioolb.1	|- ( ph -> A e. RR )
limciccioolb.2	|- ( ph -> B e. RR )
limciccioolb.3	|- ( ph -> A < B )
limciccioolb.4	|- ( ph -> F : ( A [,] B ) --> CC )

Assertion

Ref	Expression
limciccioolb	|- ( ph -> ( ( F |` ( A (,) B ) ) lim CC A ) = ( F lim CC A ) )

Proof of Theorem limciccioolb

Dummy variable x is distinct from all other variables.

Step	Hyp	Ref	Expression
1		limciccioolb.4	. 2 |- ( ph -> F : ( A [,] B ) --> CC )
2		ioossicc 12259	. . 3 |- ( A (,) B ) C_ ( A [,] B )
3	2	a1i 11	. 2 |- ( ph -> ( A (,) B ) C_ ( A [,] B ) )
4		limciccioolb.1	. . . 4 |- ( ph -> A e. RR )
5		limciccioolb.2	. . . 4 |- ( ph -> B e. RR )
6	4, 5	iccssred 39727	. . 3 |- ( ph -> ( A [,] B ) C_ RR )
7		ax-resscn 9993	. . 3 |- RR C_ CC
8	6, 7	syl6ss 3615	. 2 |- ( ph -> ( A [,] B ) C_ CC )
9		eqid 2622	. 2 |- ( TopOpen ` ℂfld ) = ( TopOpen ` ℂfld )
10		eqid 2622	. 2 |- ( ( TopOpen ` ℂfld ) ↾t ( ( A [,] B ) u. { A } ) ) = ( ( TopOpen ` ℂfld ) ↾t ( ( A [,] B ) u. { A } ) )
11		retop 22565	. . . . . . . . 9 |- ( topGen ` ran (,) ) e. Top
12	11	a1i 11	. . . . . . . 8 |- ( ph -> ( topGen ` ran (,) ) e. Top )
13	5	rexrd 10089	. . . . . . . . . . 11 |- ( ph -> B e. RR* )
14		icossre 12254	. . . . . . . . . . 11 |- ( ( A e. RR /\ B e. RR* ) -> ( A [,) B ) C_ RR )
15	4, 13, 14	syl2anc 693	. . . . . . . . . 10 |- ( ph -> ( A [,) B ) C_ RR )
16		difssd 3738	. . . . . . . . . 10 |- ( ph -> ( RR \ ( A [,] B ) ) C_ RR )
17	15, 16	unssd 3789	. . . . . . . . 9 |- ( ph -> ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) C_ RR )
18		uniretop 22566	. . . . . . . . 9 |- RR = U. ( topGen ` ran (,) )
19	17, 18	syl6sseq 3651	. . . . . . . 8 |- ( ph -> ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) C_ U. ( topGen ` ran (,) ) )
20		elioore 12205	. . . . . . . . . . . . . . 15 |- ( x e. ( -oo (,) B ) -> x e. RR )
21	20	ad2antlr 763	. . . . . . . . . . . . . 14 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> x e. RR )
22		simpr 477	. . . . . . . . . . . . . 14 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> A <_ x )
23		simpr 477	. . . . . . . . . . . . . . . . 17 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> x e. ( -oo (,) B ) )
24		mnfxr 10096	. . . . . . . . . . . . . . . . . . 19 |- -oo e. RR*
25	24	a1i 11	. . . . . . . . . . . . . . . . . 18 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> -oo e. RR* )
26	13	adantr 481	. . . . . . . . . . . . . . . . . 18 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> B e. RR* )
27		elioo2 12216	. . . . . . . . . . . . . . . . . 18 |- ( ( -oo e. RR* /\ B e. RR* ) -> ( x e. ( -oo (,) B ) <-> ( x e. RR /\ -oo < x /\ x < B ) ) )
28	25, 26, 27	syl2anc 693	. . . . . . . . . . . . . . . . 17 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> ( x e. ( -oo (,) B ) <-> ( x e. RR /\ -oo < x /\ x < B ) ) )
29	23, 28	mpbid 222	. . . . . . . . . . . . . . . 16 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> ( x e. RR /\ -oo < x /\ x < B ) )
30	29	simp3d 1075	. . . . . . . . . . . . . . 15 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> x < B )
31	30	adantr 481	. . . . . . . . . . . . . 14 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> x < B )
32	4	ad2antrr 762	. . . . . . . . . . . . . . 15 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> A e. RR )
33	13	ad2antrr 762	. . . . . . . . . . . . . . 15 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> B e. RR* )
34		elico2 12237	. . . . . . . . . . . . . . 15 |- ( ( A e. RR /\ B e. RR* ) -> ( x e. ( A [,) B ) <-> ( x e. RR /\ A <_ x /\ x < B ) ) )
35	32, 33, 34	syl2anc 693	. . . . . . . . . . . . . 14 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> ( x e. ( A [,) B ) <-> ( x e. RR /\ A <_ x /\ x < B ) ) )
36	21, 22, 31, 35	mpbir3and 1245	. . . . . . . . . . . . 13 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> x e. ( A [,) B ) )
37	36	orcd 407	. . . . . . . . . . . 12 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ A <_ x ) -> ( x e. ( A [,) B ) \/ x e. ( RR \ ( A [,] B ) ) ) )
38	20	ad2antlr 763	. . . . . . . . . . . . . 14 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> x e. RR )
39		simpr 477	. . . . . . . . . . . . . . . 16 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> -. A <_ x )
40	39	intnanrd 963	. . . . . . . . . . . . . . 15 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> -. ( A <_ x /\ x <_ B ) )
41	4	rexrd 10089	. . . . . . . . . . . . . . . . 17 |- ( ph -> A e. RR* )
42	41	ad2antrr 762	. . . . . . . . . . . . . . . 16 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> A e. RR* )
43	13	ad2antrr 762	. . . . . . . . . . . . . . . 16 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> B e. RR* )
44	38	rexrd 10089	. . . . . . . . . . . . . . . 16 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> x e. RR* )
45		elicc4 12240	. . . . . . . . . . . . . . . 16 |- ( ( A e. RR* /\ B e. RR* /\ x e. RR* ) -> ( x e. ( A [,] B ) <-> ( A <_ x /\ x <_ B ) ) )
46	42, 43, 44, 45	syl3anc 1326	. . . . . . . . . . . . . . 15 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> ( x e. ( A [,] B ) <-> ( A <_ x /\ x <_ B ) ) )
47	40, 46	mtbird 315	. . . . . . . . . . . . . 14 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> -. x e. ( A [,] B ) )
48	38, 47	eldifd 3585	. . . . . . . . . . . . 13 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> x e. ( RR \ ( A [,] B ) ) )
49	48	olcd 408	. . . . . . . . . . . 12 |- ( ( ( ph /\ x e. ( -oo (,) B ) ) /\ -. A <_ x ) -> ( x e. ( A [,) B ) \/ x e. ( RR \ ( A [,] B ) ) ) )
50	37, 49	pm2.61dan 832	. . . . . . . . . . 11 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> ( x e. ( A [,) B ) \/ x e. ( RR \ ( A [,] B ) ) ) )
51		elun 3753	. . . . . . . . . . 11 |- ( x e. ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) <-> ( x e. ( A [,) B ) \/ x e. ( RR \ ( A [,] B ) ) ) )
52	50, 51	sylibr 224	. . . . . . . . . 10 |- ( ( ph /\ x e. ( -oo (,) B ) ) -> x e. ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) )
53	52	ralrimiva 2966	. . . . . . . . 9 |- ( ph -> A. x e. ( -oo (,) B ) x e. ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) )
54		dfss3 3592	. . . . . . . . 9 |- ( ( -oo (,) B ) C_ ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) <-> A. x e. ( -oo (,) B ) x e. ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) )
55	53, 54	sylibr 224	. . . . . . . 8 |- ( ph -> ( -oo (,) B ) C_ ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) )
56		eqid 2622	. . . . . . . . 9 |- U. ( topGen ` ran (,) ) = U. ( topGen ` ran (,) )
57	56	ntrss 20859	. . . . . . . 8 |- ( ( ( topGen ` ran (,) ) e. Top /\ ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) C_ U. ( topGen ` ran (,) ) /\ ( -oo (,) B ) C_ ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) ) -> ( ( int ` ( topGen ` ran (,) ) ) ` ( -oo (,) B ) ) C_ ( ( int ` ( topGen ` ran (,) ) ) ` ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) ) )
58	12, 19, 55, 57	syl3anc 1326	. . . . . . 7 |- ( ph -> ( ( int ` ( topGen ` ran (,) ) ) ` ( -oo (,) B ) ) C_ ( ( int ` ( topGen ` ran (,) ) ) ` ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) ) )
59	24	a1i 11	. . . . . . . . 9 |- ( ph -> -oo e. RR* )
60	4	mnfltd 11958	. . . . . . . . 9 |- ( ph -> -oo < A )
61		limciccioolb.3	. . . . . . . . 9 |- ( ph -> A < B )
62	59, 13, 4, 60, 61	eliood 39720	. . . . . . . 8 |- ( ph -> A e. ( -oo (,) B ) )
63		iooretop 22569	. . . . . . . . . 10 |- ( -oo (,) B ) e. ( topGen ` ran (,) )
64	63	a1i 11	. . . . . . . . 9 |- ( ph -> ( -oo (,) B ) e. ( topGen ` ran (,) ) )
65		isopn3i 20886	. . . . . . . . 9 |- ( ( ( topGen ` ran (,) ) e. Top /\ ( -oo (,) B ) e. ( topGen ` ran (,) ) ) -> ( ( int ` ( topGen ` ran (,) ) ) ` ( -oo (,) B ) ) = ( -oo (,) B ) )
66	12, 64, 65	syl2anc 693	. . . . . . . 8 |- ( ph -> ( ( int ` ( topGen ` ran (,) ) ) ` ( -oo (,) B ) ) = ( -oo (,) B ) )
67	62, 66	eleqtrrd 2704	. . . . . . 7 |- ( ph -> A e. ( ( int ` ( topGen ` ran (,) ) ) ` ( -oo (,) B ) ) )
68	58, 67	sseldd 3604	. . . . . 6 |- ( ph -> A e. ( ( int ` ( topGen ` ran (,) ) ) ` ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) ) )
69	4	leidd 10594	. . . . . . 7 |- ( ph -> A <_ A )
70	4, 5, 61	ltled 10185	. . . . . . 7 |- ( ph -> A <_ B )
71	4, 5, 4, 69, 70	eliccd 39726	. . . . . 6 |- ( ph -> A e. ( A [,] B ) )
72	68, 71	elind 3798	. . . . 5 |- ( ph -> A e. ( ( ( int ` ( topGen ` ran (,) ) ) ` ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) ) i^i ( A [,] B ) ) )
73		icossicc 12260	. . . . . . 7 |- ( A [,) B ) C_ ( A [,] B )
74	73	a1i 11	. . . . . 6 |- ( ph -> ( A [,) B ) C_ ( A [,] B ) )
75		eqid 2622	. . . . . . 7 |- ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) = ( ( topGen ` ran (,) ) ↾t ( A [,] B ) )
76	18, 75	restntr 20986	. . . . . 6 |- ( ( ( topGen ` ran (,) ) e. Top /\ ( A [,] B ) C_ RR /\ ( A [,) B ) C_ ( A [,] B ) ) -> ( ( int ` ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) ) ` ( A [,) B ) ) = ( ( ( int ` ( topGen ` ran (,) ) ) ` ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) ) i^i ( A [,] B ) ) )
77	12, 6, 74, 76	syl3anc 1326	. . . . 5 |- ( ph -> ( ( int ` ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) ) ` ( A [,) B ) ) = ( ( ( int ` ( topGen ` ran (,) ) ) ` ( ( A [,) B ) u. ( RR \ ( A [,] B ) ) ) ) i^i ( A [,] B ) ) )
78	72, 77	eleqtrrd 2704	. . . 4 |- ( ph -> A e. ( ( int ` ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) ) ` ( A [,) B ) ) )
79		eqid 2622	. . . . . . . . 9 |- ( topGen ` ran (,) ) = ( topGen ` ran (,) )
80	9, 79	rerest 22607	. . . . . . . 8 |- ( ( A [,] B ) C_ RR -> ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) = ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) )
81	6, 80	syl 17	. . . . . . 7 |- ( ph -> ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) = ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) )
82	81	eqcomd 2628	. . . . . 6 |- ( ph -> ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) = ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) )
83	82	fveq2d 6195	. . . . 5 |- ( ph -> ( int ` ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) ) = ( int ` ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) ) )
84	83	fveq1d 6193	. . . 4 |- ( ph -> ( ( int ` ( ( topGen ` ran (,) ) ↾t ( A [,] B ) ) ) ` ( A [,) B ) ) = ( ( int ` ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) ) ` ( A [,) B ) ) )
85	78, 84	eleqtrd 2703	. . 3 |- ( ph -> A e. ( ( int ` ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) ) ` ( A [,) B ) ) )
86	71	snssd 4340	. . . . . . . 8 |- ( ph -> { A } C_ ( A [,] B ) )
87		ssequn2 3786	. . . . . . . 8 |- ( { A } C_ ( A [,] B ) <-> ( ( A [,] B ) u. { A } ) = ( A [,] B ) )
88	86, 87	sylib 208	. . . . . . 7 |- ( ph -> ( ( A [,] B ) u. { A } ) = ( A [,] B ) )
89	88	eqcomd 2628	. . . . . 6 |- ( ph -> ( A [,] B ) = ( ( A [,] B ) u. { A } ) )
90	89	oveq2d 6666	. . . . 5 |- ( ph -> ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) = ( ( TopOpen ` ℂfld ) ↾t ( ( A [,] B ) u. { A } ) ) )
91	90	fveq2d 6195	. . . 4 |- ( ph -> ( int ` ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) ) = ( int ` ( ( TopOpen ` ℂfld ) ↾t ( ( A [,] B ) u. { A } ) ) ) )
92		uncom 3757	. . . . 5 |- ( ( A (,) B ) u. { A } ) = ( { A } u. ( A (,) B ) )
93		snunioo 12298	. . . . . 6 |- ( ( A e. RR* /\ B e. RR* /\ A < B ) -> ( { A } u. ( A (,) B ) ) = ( A [,) B ) )
94	41, 13, 61, 93	syl3anc 1326	. . . . 5 |- ( ph -> ( { A } u. ( A (,) B ) ) = ( A [,) B ) )
95	92, 94	syl5req 2669	. . . 4 |- ( ph -> ( A [,) B ) = ( ( A (,) B ) u. { A } ) )
96	91, 95	fveq12d 6197	. . 3 |- ( ph -> ( ( int ` ( ( TopOpen ` ℂfld ) ↾t ( A [,] B ) ) ) ` ( A [,) B ) ) = ( ( int ` ( ( TopOpen ` ℂfld ) ↾t ( ( A [,] B ) u. { A } ) ) ) ` ( ( A (,) B ) u. { A } ) ) )
97	85, 96	eleqtrd 2703	. 2 |- ( ph -> A e. ( ( int ` ( ( TopOpen ` ℂfld ) ↾t ( ( A [,] B ) u. { A } ) ) ) ` ( ( A (,) B ) u. { A } ) ) )
98	1, 3, 8, 9, 10, 97	limcres 23650	1 |- ( ph -> ( ( F |` ( A (,) B ) ) lim CC A ) = ( F lim CC A ) )

Syntax hints:   -. wn 3   -> wi 4   <-> wb 196   \/ wo 383   /\ wa 384   /\ w3a 1037   = wceq 1483   e. wcel 1990   A.wral 2912   \ cdif 3571   u. cun 3572   i^i cin 3573   C_ wss 3574   {csn 4177   U.cuni 4436   class class class wbr 4653   ran crn 5115   |` cres 5116   -->wf 5884   ` cfv 5888  (class class class)co 6650   CCcc 9934   RRcr 9935   -oocmnf 10072   RR*cxr 10073   < clt 10074   <_ cle 10075   (,)cioo 12175   [,)cico 12177   [,]cicc 12178   ↾_t crest 16081   TopOpenctopn 16082   topGenctg 16098  ℂ_fldccnfld 19746   Topctop 20698   intcnt 20821   lim CC climc 23626

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-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  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-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  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-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-iin 4523  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  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-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-oadd 7564  df-er 7742  df-map 7859  df-pm 7860  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-fi 8317  df-sup 8348  df-inf 8349  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-2 11079  df-3 11080  df-4 11081  df-5 11082  df-6 11083  df-7 11084  df-8 11085  df-9 11086  df-n0 11293  df-z 11378  df-dec 11494  df-uz 11688  df-q 11789  df-rp 11833  df-xneg 11946  df-xadd 11947  df-xmul 11948  df-ioo 12179  df-ico 12181  df-icc 12182  df-fz 12327  df-seq 12802  df-exp 12861  df-cj 13839  df-re 13840  df-im 13841  df-sqrt 13975  df-abs 13976  df-struct 15859  df-ndx 15860  df-slot 15861  df-base 15863  df-plusg 15954  df-mulr 15955  df-starv 15956  df-tset 15960  df-ple 15961  df-ds 15964  df-unif 15965  df-rest 16083  df-topn 16084  df-topgen 16104  df-psmet 19738  df-xmet 19739  df-met 19740  df-bl 19741  df-mopn 19742  df-cnfld 19747  df-top 20699  df-topon 20716  df-topsp 20737  df-bases 20750  df-cld 20823  df-ntr 20824  df-cls 20825  df-cnp 21032  df-xms 22125  df-ms 22126  df-limc 23630

This theorem is referenced by:  cncfiooicclem1  40106  fourierdlem82  40405  fourierdlem93  40416  fourierdlem111  40434