Theorem monoord2 10491

Description: Ordering relation for a monotonic sequence, decreasing case. (Contributed by Mario Carneiro, 18-Jul-2014.)

Hypotheses

Ref	Expression
monoord2.1	|- ( ph -> N e. ( ZZ>= ` M ) )
monoord2.2	|- ( ( ph /\ k e. ( M ... N ) ) -> ( F ` k ) e. RR )
monoord2.3	|- ( ( ph /\ k e. ( M ... ( N - 1 ) ) ) -> ( F ` ( k + 1 ) ) <_ ( F ` k ) )

Assertion

Ref	Expression
monoord2	|- ( ph -> ( F ` N ) <_ ( F ` M ) )

Distinct variable groups:   k, F   k, M   k, N   ph, k

Proof of Theorem monoord2

Dummy variable n is distinct from all other variables.

Step	Hyp	Ref	Expression
1		monoord2.1	. . . 4 |- ( ph -> N e. ( ZZ>= ` M ) )
2		monoord2.2	. . . . . . 7 |- ( ( ph /\ k e. ( M ... N ) ) -> ( F ` k ) e. RR )
3	2	renegcld 8351	. . . . . 6 |- ( ( ph /\ k e. ( M ... N ) ) -> -u ( F ` k ) e. RR )
4		eqid 2187	. . . . . 6 |- ( k e. ( M ... N ) |-> -u ( F ` k ) ) = ( k e. ( M ... N ) |-> -u ( F ` k ) )
5	3, 4	fmptd 5683	. . . . 5 |- ( ph -> ( k e. ( M ... N ) |-> -u ( F ` k ) ) : ( M ... N ) --> RR )
6	5	ffvelcdmda 5664	. . . 4 |- ( ( ph /\ n e. ( M ... N ) ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` n ) e. RR )
7		monoord2.3	. . . . . . . . 9 |- ( ( ph /\ k e. ( M ... ( N - 1 ) ) ) -> ( F ` ( k + 1 ) ) <_ ( F ` k ) )
8	7	ralrimiva 2560	. . . . . . . 8 |- ( ph -> A. k e. ( M ... ( N - 1 ) ) ( F ` ( k + 1 ) ) <_ ( F ` k ) )
9		oveq1 5895	. . . . . . . . . . 11 |- ( k = n -> ( k + 1 ) = ( n + 1 ) )
10	9	fveq2d 5531	. . . . . . . . . 10 |- ( k = n -> ( F ` ( k + 1 ) ) = ( F ` ( n + 1 ) ) )
11		fveq2 5527	. . . . . . . . . 10 |- ( k = n -> ( F ` k ) = ( F ` n ) )
12	10, 11	breq12d 4028	. . . . . . . . 9 |- ( k = n -> ( ( F ` ( k + 1 ) ) <_ ( F ` k ) <-> ( F ` ( n + 1 ) ) <_ ( F ` n ) ) )
13	12	cbvralv 2715	. . . . . . . 8 |- ( A. k e. ( M ... ( N - 1 ) ) ( F ` ( k + 1 ) ) <_ ( F ` k ) <-> A. n e. ( M ... ( N - 1 ) ) ( F ` ( n + 1 ) ) <_ ( F ` n ) )
14	8, 13	sylib 122	. . . . . . 7 |- ( ph -> A. n e. ( M ... ( N - 1 ) ) ( F ` ( n + 1 ) ) <_ ( F ` n ) )
15	14	r19.21bi 2575	. . . . . 6 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( F ` ( n + 1 ) ) <_ ( F ` n ) )
16		fveq2 5527	. . . . . . . . 9 |- ( k = ( n + 1 ) -> ( F ` k ) = ( F ` ( n + 1 ) ) )
17	16	eleq1d 2256	. . . . . . . 8 |- ( k = ( n + 1 ) -> ( ( F ` k ) e. RR <-> ( F ` ( n + 1 ) ) e. RR ) )
18	2	ralrimiva 2560	. . . . . . . . 9 |- ( ph -> A. k e. ( M ... N ) ( F ` k ) e. RR )
19	18	adantr 276	. . . . . . . 8 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> A. k e. ( M ... N ) ( F ` k ) e. RR )
20		fzp1elp1 10089	. . . . . . . . . 10 |- ( n e. ( M ... ( N - 1 ) ) -> ( n + 1 ) e. ( M ... ( ( N - 1 ) + 1 ) ) )
21	20	adantl 277	. . . . . . . . 9 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( n + 1 ) e. ( M ... ( ( N - 1 ) + 1 ) ) )
22		eluzelz 9551	. . . . . . . . . . . . . 14 |- ( N e. ( ZZ>= ` M ) -> N e. ZZ )
23	1, 22	syl 14	. . . . . . . . . . . . 13 |- ( ph -> N e. ZZ )
24	23	zcnd 9390	. . . . . . . . . . . 12 |- ( ph -> N e. CC )
25		ax-1cn 7918	. . . . . . . . . . . 12 |- 1 e. CC
26		npcan 8180	. . . . . . . . . . . 12 |- ( ( N e. CC /\ 1 e. CC ) -> ( ( N - 1 ) + 1 ) = N )
27	24, 25, 26	sylancl 413	. . . . . . . . . . 11 |- ( ph -> ( ( N - 1 ) + 1 ) = N )
28	27	oveq2d 5904	. . . . . . . . . 10 |- ( ph -> ( M ... ( ( N - 1 ) + 1 ) ) = ( M ... N ) )
29	28	adantr 276	. . . . . . . . 9 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( M ... ( ( N - 1 ) + 1 ) ) = ( M ... N ) )
30	21, 29	eleqtrd 2266	. . . . . . . 8 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( n + 1 ) e. ( M ... N ) )
31	17, 19, 30	rspcdva 2858	. . . . . . 7 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( F ` ( n + 1 ) ) e. RR )
32	11	eleq1d 2256	. . . . . . . 8 |- ( k = n -> ( ( F ` k ) e. RR <-> ( F ` n ) e. RR ) )
33		fzssp1 10081	. . . . . . . . . 10 |- ( M ... ( N - 1 ) ) C_ ( M ... ( ( N - 1 ) + 1 ) )
34	33, 28	sseqtrid 3217	. . . . . . . . 9 |- ( ph -> ( M ... ( N - 1 ) ) C_ ( M ... N ) )
35	34	sselda 3167	. . . . . . . 8 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> n e. ( M ... N ) )
36	32, 19, 35	rspcdva 2858	. . . . . . 7 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( F ` n ) e. RR )
37	31, 36	lenegd 8495	. . . . . 6 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( ( F ` ( n + 1 ) ) <_ ( F ` n ) <-> -u ( F ` n ) <_ -u ( F ` ( n + 1 ) ) ) )
38	15, 37	mpbid 147	. . . . 5 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> -u ( F ` n ) <_ -u ( F ` ( n + 1 ) ) )
39	36	renegcld 8351	. . . . . 6 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> -u ( F ` n ) e. RR )
40	11	negeqd 8166	. . . . . . 7 |- ( k = n -> -u ( F ` k ) = -u ( F ` n ) )
41	40, 4	fvmptg 5605	. . . . . 6 |- ( ( n e. ( M ... N ) /\ -u ( F ` n ) e. RR ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` n ) = -u ( F ` n ) )
42	35, 39, 41	syl2anc 411	. . . . 5 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` n ) = -u ( F ` n ) )
43	31	renegcld 8351	. . . . . 6 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> -u ( F ` ( n + 1 ) ) e. RR )
44	16	negeqd 8166	. . . . . . 7 |- ( k = ( n + 1 ) -> -u ( F ` k ) = -u ( F ` ( n + 1 ) ) )
45	44, 4	fvmptg 5605	. . . . . 6 |- ( ( ( n + 1 ) e. ( M ... N ) /\ -u ( F ` ( n + 1 ) ) e. RR ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` ( n + 1 ) ) = -u ( F ` ( n + 1 ) ) )
46	30, 43, 45	syl2anc 411	. . . . 5 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` ( n + 1 ) ) = -u ( F ` ( n + 1 ) ) )
47	38, 42, 46	3brtr4d 4047	. . . 4 |- ( ( ph /\ n e. ( M ... ( N - 1 ) ) ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` n ) <_ ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` ( n + 1 ) ) )
48	1, 6, 47	monoord 10490	. . 3 |- ( ph -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` M ) <_ ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` N ) )
49		eluzfz1 10045	. . . . 5 |- ( N e. ( ZZ>= ` M ) -> M e. ( M ... N ) )
50	1, 49	syl 14	. . . 4 |- ( ph -> M e. ( M ... N ) )
51		fveq2 5527	. . . . . . 7 |- ( k = M -> ( F ` k ) = ( F ` M ) )
52	51	eleq1d 2256	. . . . . 6 |- ( k = M -> ( ( F ` k ) e. RR <-> ( F ` M ) e. RR ) )
53	52, 18, 50	rspcdva 2858	. . . . 5 |- ( ph -> ( F ` M ) e. RR )
54	53	renegcld 8351	. . . 4 |- ( ph -> -u ( F ` M ) e. RR )
55	51	negeqd 8166	. . . . 5 |- ( k = M -> -u ( F ` k ) = -u ( F ` M ) )
56	55, 4	fvmptg 5605	. . . 4 |- ( ( M e. ( M ... N ) /\ -u ( F ` M ) e. RR ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` M ) = -u ( F ` M ) )
57	50, 54, 56	syl2anc 411	. . 3 |- ( ph -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` M ) = -u ( F ` M ) )
58		eluzfz2 10046	. . . . 5 |- ( N e. ( ZZ>= ` M ) -> N e. ( M ... N ) )
59	1, 58	syl 14	. . . 4 |- ( ph -> N e. ( M ... N ) )
60		fveq2 5527	. . . . . . 7 |- ( k = N -> ( F ` k ) = ( F ` N ) )
61	60	eleq1d 2256	. . . . . 6 |- ( k = N -> ( ( F ` k ) e. RR <-> ( F ` N ) e. RR ) )
62	61, 18, 59	rspcdva 2858	. . . . 5 |- ( ph -> ( F ` N ) e. RR )
63	62	renegcld 8351	. . . 4 |- ( ph -> -u ( F ` N ) e. RR )
64	60	negeqd 8166	. . . . 5 |- ( k = N -> -u ( F ` k ) = -u ( F ` N ) )
65	64, 4	fvmptg 5605	. . . 4 |- ( ( N e. ( M ... N ) /\ -u ( F ` N ) e. RR ) -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` N ) = -u ( F ` N ) )
66	59, 63, 65	syl2anc 411	. . 3 |- ( ph -> ( ( k e. ( M ... N ) |-> -u ( F ` k ) ) ` N ) = -u ( F ` N ) )
67	48, 57, 66	3brtr3d 4046	. 2 |- ( ph -> -u ( F ` M ) <_ -u ( F ` N ) )
68	62, 53	lenegd 8495	. 2 |- ( ph -> ( ( F ` N ) <_ ( F ` M ) <-> -u ( F ` M ) <_ -u ( F ` N ) ) )
69	67, 68	mpbird 167	1 |- ( ph -> ( F ` N ) <_ ( F ` M ) )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1363   e. wcel 2158   A.wral 2465   class class class wbr 4015   |-> cmpt 4076   ` cfv 5228  (class class class)co 5888   CCcc 7823   RRcr 7824   1c1 7826   + caddc 7828   <_ cle 8007   - cmin 8142   -ucneg 8143   ZZcz 9267   ZZ>=cuz 9542   ...cfz 10022

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 710  ax-5 1457  ax-7 1458  ax-gen 1459  ax-ie1 1503  ax-ie2 1504  ax-8 1514  ax-10 1515  ax-11 1516  ax-i12 1517  ax-bndl 1519  ax-4 1520  ax-17 1536  ax-i9 1540  ax-ial 1544  ax-i5r 1545  ax-13 2160  ax-14 2161  ax-ext 2169  ax-sep 4133  ax-pow 4186  ax-pr 4221  ax-un 4445  ax-setind 4548  ax-cnex 7916  ax-resscn 7917  ax-1cn 7918  ax-1re 7919  ax-icn 7920  ax-addcl 7921  ax-addrcl 7922  ax-mulcl 7923  ax-addcom 7925  ax-addass 7927  ax-distr 7929  ax-i2m1 7930  ax-0lt1 7931  ax-0id 7933  ax-rnegex 7934  ax-cnre 7936  ax-pre-ltirr 7937  ax-pre-ltwlin 7938  ax-pre-lttrn 7939  ax-pre-ltadd 7941

This theorem depends on definitions:  df-bi 117  df-3or 980  df-3an 981  df-tru 1366  df-fal 1369  df-nf 1471  df-sb 1773  df-eu 2039  df-mo 2040  df-clab 2174  df-cleq 2180  df-clel 2183  df-nfc 2318  df-ne 2358  df-nel 2453  df-ral 2470  df-rex 2471  df-reu 2472  df-rab 2474  df-v 2751  df-sbc 2975  df-dif 3143  df-un 3145  df-in 3147  df-ss 3154  df-pw 3589  df-sn 3610  df-pr 3611  df-op 3613  df-uni 3822  df-int 3857  df-br 4016  df-opab 4077  df-mpt 4078  df-id 4305  df-xp 4644  df-rel 4645  df-cnv 4646  df-co 4647  df-dm 4648  df-rn 4649  df-res 4650  df-ima 4651  df-iota 5190  df-fun 5230  df-fn 5231  df-f 5232  df-fv 5236  df-riota 5844  df-ov 5891  df-oprab 5892  df-mpo 5893  df-pnf 8008  df-mnf 8009  df-xr 8010  df-ltxr 8011  df-le 8012  df-sub 8144  df-neg 8145  df-inn 8934  df-n0 9191  df-z 9268  df-uz 9543  df-fz 10023

This theorem is referenced by: (None)