ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  monoord2 GIF version

Theorem monoord2 10420
Description: Ordering relation for a monotonic sequence, decreasing case. (Contributed by Mario Carneiro, 18-Jul-2014.)
Hypotheses
Ref Expression
monoord2.1 (𝜑𝑁 ∈ (ℤ𝑀))
monoord2.2 ((𝜑𝑘 ∈ (𝑀...𝑁)) → (𝐹𝑘) ∈ ℝ)
monoord2.3 ((𝜑𝑘 ∈ (𝑀...(𝑁 − 1))) → (𝐹‘(𝑘 + 1)) ≤ (𝐹𝑘))
Assertion
Ref Expression
monoord2 (𝜑 → (𝐹𝑁) ≤ (𝐹𝑀))
Distinct variable groups:   𝑘,𝐹   𝑘,𝑀   𝑘,𝑁   𝜑,𝑘

Proof of Theorem monoord2
Dummy variable 𝑛 is distinct from all other variables.
StepHypRef Expression
1 monoord2.1 . . . 4 (𝜑𝑁 ∈ (ℤ𝑀))
2 monoord2.2 . . . . . . 7 ((𝜑𝑘 ∈ (𝑀...𝑁)) → (𝐹𝑘) ∈ ℝ)
32renegcld 8286 . . . . . 6 ((𝜑𝑘 ∈ (𝑀...𝑁)) → -(𝐹𝑘) ∈ ℝ)
4 eqid 2170 . . . . . 6 (𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘)) = (𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))
53, 4fmptd 5647 . . . . 5 (𝜑 → (𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘)):(𝑀...𝑁)⟶ℝ)
65ffvelrnda 5628 . . . 4 ((𝜑𝑛 ∈ (𝑀...𝑁)) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑛) ∈ ℝ)
7 monoord2.3 . . . . . . . . 9 ((𝜑𝑘 ∈ (𝑀...(𝑁 − 1))) → (𝐹‘(𝑘 + 1)) ≤ (𝐹𝑘))
87ralrimiva 2543 . . . . . . . 8 (𝜑 → ∀𝑘 ∈ (𝑀...(𝑁 − 1))(𝐹‘(𝑘 + 1)) ≤ (𝐹𝑘))
9 oveq1 5857 . . . . . . . . . . 11 (𝑘 = 𝑛 → (𝑘 + 1) = (𝑛 + 1))
109fveq2d 5498 . . . . . . . . . 10 (𝑘 = 𝑛 → (𝐹‘(𝑘 + 1)) = (𝐹‘(𝑛 + 1)))
11 fveq2 5494 . . . . . . . . . 10 (𝑘 = 𝑛 → (𝐹𝑘) = (𝐹𝑛))
1210, 11breq12d 4000 . . . . . . . . 9 (𝑘 = 𝑛 → ((𝐹‘(𝑘 + 1)) ≤ (𝐹𝑘) ↔ (𝐹‘(𝑛 + 1)) ≤ (𝐹𝑛)))
1312cbvralv 2696 . . . . . . . 8 (∀𝑘 ∈ (𝑀...(𝑁 − 1))(𝐹‘(𝑘 + 1)) ≤ (𝐹𝑘) ↔ ∀𝑛 ∈ (𝑀...(𝑁 − 1))(𝐹‘(𝑛 + 1)) ≤ (𝐹𝑛))
148, 13sylib 121 . . . . . . 7 (𝜑 → ∀𝑛 ∈ (𝑀...(𝑁 − 1))(𝐹‘(𝑛 + 1)) ≤ (𝐹𝑛))
1514r19.21bi 2558 . . . . . 6 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → (𝐹‘(𝑛 + 1)) ≤ (𝐹𝑛))
16 fveq2 5494 . . . . . . . . 9 (𝑘 = (𝑛 + 1) → (𝐹𝑘) = (𝐹‘(𝑛 + 1)))
1716eleq1d 2239 . . . . . . . 8 (𝑘 = (𝑛 + 1) → ((𝐹𝑘) ∈ ℝ ↔ (𝐹‘(𝑛 + 1)) ∈ ℝ))
182ralrimiva 2543 . . . . . . . . 9 (𝜑 → ∀𝑘 ∈ (𝑀...𝑁)(𝐹𝑘) ∈ ℝ)
1918adantr 274 . . . . . . . 8 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → ∀𝑘 ∈ (𝑀...𝑁)(𝐹𝑘) ∈ ℝ)
20 fzp1elp1 10018 . . . . . . . . . 10 (𝑛 ∈ (𝑀...(𝑁 − 1)) → (𝑛 + 1) ∈ (𝑀...((𝑁 − 1) + 1)))
2120adantl 275 . . . . . . . . 9 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → (𝑛 + 1) ∈ (𝑀...((𝑁 − 1) + 1)))
22 eluzelz 9483 . . . . . . . . . . . . . 14 (𝑁 ∈ (ℤ𝑀) → 𝑁 ∈ ℤ)
231, 22syl 14 . . . . . . . . . . . . 13 (𝜑𝑁 ∈ ℤ)
2423zcnd 9322 . . . . . . . . . . . 12 (𝜑𝑁 ∈ ℂ)
25 ax-1cn 7854 . . . . . . . . . . . 12 1 ∈ ℂ
26 npcan 8115 . . . . . . . . . . . 12 ((𝑁 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑁 − 1) + 1) = 𝑁)
2724, 25, 26sylancl 411 . . . . . . . . . . 11 (𝜑 → ((𝑁 − 1) + 1) = 𝑁)
2827oveq2d 5866 . . . . . . . . . 10 (𝜑 → (𝑀...((𝑁 − 1) + 1)) = (𝑀...𝑁))
2928adantr 274 . . . . . . . . 9 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → (𝑀...((𝑁 − 1) + 1)) = (𝑀...𝑁))
3021, 29eleqtrd 2249 . . . . . . . 8 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → (𝑛 + 1) ∈ (𝑀...𝑁))
3117, 19, 30rspcdva 2839 . . . . . . 7 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → (𝐹‘(𝑛 + 1)) ∈ ℝ)
3211eleq1d 2239 . . . . . . . 8 (𝑘 = 𝑛 → ((𝐹𝑘) ∈ ℝ ↔ (𝐹𝑛) ∈ ℝ))
33 fzssp1 10010 . . . . . . . . . 10 (𝑀...(𝑁 − 1)) ⊆ (𝑀...((𝑁 − 1) + 1))
3433, 28sseqtrid 3197 . . . . . . . . 9 (𝜑 → (𝑀...(𝑁 − 1)) ⊆ (𝑀...𝑁))
3534sselda 3147 . . . . . . . 8 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → 𝑛 ∈ (𝑀...𝑁))
3632, 19, 35rspcdva 2839 . . . . . . 7 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → (𝐹𝑛) ∈ ℝ)
3731, 36lenegd 8430 . . . . . 6 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → ((𝐹‘(𝑛 + 1)) ≤ (𝐹𝑛) ↔ -(𝐹𝑛) ≤ -(𝐹‘(𝑛 + 1))))
3815, 37mpbid 146 . . . . 5 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → -(𝐹𝑛) ≤ -(𝐹‘(𝑛 + 1)))
3936renegcld 8286 . . . . . 6 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → -(𝐹𝑛) ∈ ℝ)
4011negeqd 8101 . . . . . . 7 (𝑘 = 𝑛 → -(𝐹𝑘) = -(𝐹𝑛))
4140, 4fvmptg 5570 . . . . . 6 ((𝑛 ∈ (𝑀...𝑁) ∧ -(𝐹𝑛) ∈ ℝ) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑛) = -(𝐹𝑛))
4235, 39, 41syl2anc 409 . . . . 5 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑛) = -(𝐹𝑛))
4331renegcld 8286 . . . . . 6 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → -(𝐹‘(𝑛 + 1)) ∈ ℝ)
4416negeqd 8101 . . . . . . 7 (𝑘 = (𝑛 + 1) → -(𝐹𝑘) = -(𝐹‘(𝑛 + 1)))
4544, 4fvmptg 5570 . . . . . 6 (((𝑛 + 1) ∈ (𝑀...𝑁) ∧ -(𝐹‘(𝑛 + 1)) ∈ ℝ) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘(𝑛 + 1)) = -(𝐹‘(𝑛 + 1)))
4630, 43, 45syl2anc 409 . . . . 5 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘(𝑛 + 1)) = -(𝐹‘(𝑛 + 1)))
4738, 42, 463brtr4d 4019 . . . 4 ((𝜑𝑛 ∈ (𝑀...(𝑁 − 1))) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑛) ≤ ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘(𝑛 + 1)))
481, 6, 47monoord 10419 . . 3 (𝜑 → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑀) ≤ ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑁))
49 eluzfz1 9974 . . . . 5 (𝑁 ∈ (ℤ𝑀) → 𝑀 ∈ (𝑀...𝑁))
501, 49syl 14 . . . 4 (𝜑𝑀 ∈ (𝑀...𝑁))
51 fveq2 5494 . . . . . . 7 (𝑘 = 𝑀 → (𝐹𝑘) = (𝐹𝑀))
5251eleq1d 2239 . . . . . 6 (𝑘 = 𝑀 → ((𝐹𝑘) ∈ ℝ ↔ (𝐹𝑀) ∈ ℝ))
5352, 18, 50rspcdva 2839 . . . . 5 (𝜑 → (𝐹𝑀) ∈ ℝ)
5453renegcld 8286 . . . 4 (𝜑 → -(𝐹𝑀) ∈ ℝ)
5551negeqd 8101 . . . . 5 (𝑘 = 𝑀 → -(𝐹𝑘) = -(𝐹𝑀))
5655, 4fvmptg 5570 . . . 4 ((𝑀 ∈ (𝑀...𝑁) ∧ -(𝐹𝑀) ∈ ℝ) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑀) = -(𝐹𝑀))
5750, 54, 56syl2anc 409 . . 3 (𝜑 → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑀) = -(𝐹𝑀))
58 eluzfz2 9975 . . . . 5 (𝑁 ∈ (ℤ𝑀) → 𝑁 ∈ (𝑀...𝑁))
591, 58syl 14 . . . 4 (𝜑𝑁 ∈ (𝑀...𝑁))
60 fveq2 5494 . . . . . . 7 (𝑘 = 𝑁 → (𝐹𝑘) = (𝐹𝑁))
6160eleq1d 2239 . . . . . 6 (𝑘 = 𝑁 → ((𝐹𝑘) ∈ ℝ ↔ (𝐹𝑁) ∈ ℝ))
6261, 18, 59rspcdva 2839 . . . . 5 (𝜑 → (𝐹𝑁) ∈ ℝ)
6362renegcld 8286 . . . 4 (𝜑 → -(𝐹𝑁) ∈ ℝ)
6460negeqd 8101 . . . . 5 (𝑘 = 𝑁 → -(𝐹𝑘) = -(𝐹𝑁))
6564, 4fvmptg 5570 . . . 4 ((𝑁 ∈ (𝑀...𝑁) ∧ -(𝐹𝑁) ∈ ℝ) → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑁) = -(𝐹𝑁))
6659, 63, 65syl2anc 409 . . 3 (𝜑 → ((𝑘 ∈ (𝑀...𝑁) ↦ -(𝐹𝑘))‘𝑁) = -(𝐹𝑁))
6748, 57, 663brtr3d 4018 . 2 (𝜑 → -(𝐹𝑀) ≤ -(𝐹𝑁))
6862, 53lenegd 8430 . 2 (𝜑 → ((𝐹𝑁) ≤ (𝐹𝑀) ↔ -(𝐹𝑀) ≤ -(𝐹𝑁)))
6967, 68mpbird 166 1 (𝜑 → (𝐹𝑁) ≤ (𝐹𝑀))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103   = wceq 1348  wcel 2141  wral 2448   class class class wbr 3987  cmpt 4048  cfv 5196  (class class class)co 5850  cc 7759  cr 7760  1c1 7762   + caddc 7764  cle 7942  cmin 8077  -cneg 8078  cz 9199  cuz 9474  ...cfz 9952
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-sep 4105  ax-pow 4158  ax-pr 4192  ax-un 4416  ax-setind 4519  ax-cnex 7852  ax-resscn 7853  ax-1cn 7854  ax-1re 7855  ax-icn 7856  ax-addcl 7857  ax-addrcl 7858  ax-mulcl 7859  ax-addcom 7861  ax-addass 7863  ax-distr 7865  ax-i2m1 7866  ax-0lt1 7867  ax-0id 7869  ax-rnegex 7870  ax-cnre 7872  ax-pre-ltirr 7873  ax-pre-ltwlin 7874  ax-pre-lttrn 7875  ax-pre-ltadd 7877
This theorem depends on definitions:  df-bi 116  df-3or 974  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-nel 2436  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-pw 3566  df-sn 3587  df-pr 3588  df-op 3590  df-uni 3795  df-int 3830  df-br 3988  df-opab 4049  df-mpt 4050  df-id 4276  df-xp 4615  df-rel 4616  df-cnv 4617  df-co 4618  df-dm 4619  df-rn 4620  df-res 4621  df-ima 4622  df-iota 5158  df-fun 5198  df-fn 5199  df-f 5200  df-fv 5204  df-riota 5806  df-ov 5853  df-oprab 5854  df-mpo 5855  df-pnf 7943  df-mnf 7944  df-xr 7945  df-ltxr 7946  df-le 7947  df-sub 8079  df-neg 8080  df-inn 8866  df-n0 9123  df-z 9200  df-uz 9475  df-fz 9953
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator