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Theorem uzind 9323
Description: Induction on the upper integers that start at 𝑀. The first four hypotheses give us the substitution instances we need; the last two are the basis and the induction step. (Contributed by NM, 5-Jul-2005.)
Hypotheses
Ref Expression
uzind.1 (𝑗 = 𝑀 → (𝜑𝜓))
uzind.2 (𝑗 = 𝑘 → (𝜑𝜒))
uzind.3 (𝑗 = (𝑘 + 1) → (𝜑𝜃))
uzind.4 (𝑗 = 𝑁 → (𝜑𝜏))
uzind.5 (𝑀 ∈ ℤ → 𝜓)
uzind.6 ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀𝑘) → (𝜒𝜃))
Assertion
Ref Expression
uzind ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀𝑁) → 𝜏)
Distinct variable groups:   𝑗,𝑁   𝜓,𝑗   𝜒,𝑗   𝜃,𝑗   𝜏,𝑗   𝜑,𝑘   𝑗,𝑘,𝑀
Allowed substitution hints:   𝜑(𝑗)   𝜓(𝑘)   𝜒(𝑘)   𝜃(𝑘)   𝜏(𝑘)   𝑁(𝑘)

Proof of Theorem uzind
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 zre 9216 . . . . . . . . . . 11 (𝑀 ∈ ℤ → 𝑀 ∈ ℝ)
21leidd 8433 . . . . . . . . . 10 (𝑀 ∈ ℤ → 𝑀𝑀)
3 uzind.5 . . . . . . . . . 10 (𝑀 ∈ ℤ → 𝜓)
42, 3jca 304 . . . . . . . . 9 (𝑀 ∈ ℤ → (𝑀𝑀𝜓))
54ancli 321 . . . . . . . 8 (𝑀 ∈ ℤ → (𝑀 ∈ ℤ ∧ (𝑀𝑀𝜓)))
6 breq2 3993 . . . . . . . . . 10 (𝑗 = 𝑀 → (𝑀𝑗𝑀𝑀))
7 uzind.1 . . . . . . . . . 10 (𝑗 = 𝑀 → (𝜑𝜓))
86, 7anbi12d 470 . . . . . . . . 9 (𝑗 = 𝑀 → ((𝑀𝑗𝜑) ↔ (𝑀𝑀𝜓)))
98elrab 2886 . . . . . . . 8 (𝑀 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ (𝑀 ∈ ℤ ∧ (𝑀𝑀𝜓)))
105, 9sylibr 133 . . . . . . 7 (𝑀 ∈ ℤ → 𝑀 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)})
11 peano2z 9248 . . . . . . . . . . . 12 (𝑘 ∈ ℤ → (𝑘 + 1) ∈ ℤ)
1211a1i 9 . . . . . . . . . . 11 (𝑀 ∈ ℤ → (𝑘 ∈ ℤ → (𝑘 + 1) ∈ ℤ))
1312adantrd 277 . . . . . . . . . 10 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → (𝑘 + 1) ∈ ℤ))
14 zre 9216 . . . . . . . . . . . . . 14 (𝑘 ∈ ℤ → 𝑘 ∈ ℝ)
15 ltp1 8760 . . . . . . . . . . . . . . . . 17 (𝑘 ∈ ℝ → 𝑘 < (𝑘 + 1))
1615adantl 275 . . . . . . . . . . . . . . . 16 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → 𝑘 < (𝑘 + 1))
17 peano2re 8055 . . . . . . . . . . . . . . . . . 18 (𝑘 ∈ ℝ → (𝑘 + 1) ∈ ℝ)
1817ancli 321 . . . . . . . . . . . . . . . . 17 (𝑘 ∈ ℝ → (𝑘 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ))
19 lelttr 8008 . . . . . . . . . . . . . . . . . 18 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ) → ((𝑀𝑘𝑘 < (𝑘 + 1)) → 𝑀 < (𝑘 + 1)))
20193expb 1199 . . . . . . . . . . . . . . . . 17 ((𝑀 ∈ ℝ ∧ (𝑘 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ)) → ((𝑀𝑘𝑘 < (𝑘 + 1)) → 𝑀 < (𝑘 + 1)))
2118, 20sylan2 284 . . . . . . . . . . . . . . . 16 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → ((𝑀𝑘𝑘 < (𝑘 + 1)) → 𝑀 < (𝑘 + 1)))
2216, 21mpan2d 426 . . . . . . . . . . . . . . 15 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑀𝑘𝑀 < (𝑘 + 1)))
23 ltle 8007 . . . . . . . . . . . . . . . 16 ((𝑀 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ) → (𝑀 < (𝑘 + 1) → 𝑀 ≤ (𝑘 + 1)))
2417, 23sylan2 284 . . . . . . . . . . . . . . 15 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑀 < (𝑘 + 1) → 𝑀 ≤ (𝑘 + 1)))
2522, 24syld 45 . . . . . . . . . . . . . 14 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑀𝑘𝑀 ≤ (𝑘 + 1)))
261, 14, 25syl2an 287 . . . . . . . . . . . . 13 ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑀𝑘𝑀 ≤ (𝑘 + 1)))
2726adantrd 277 . . . . . . . . . . . 12 ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ) → ((𝑀𝑘𝜒) → 𝑀 ≤ (𝑘 + 1)))
2827expimpd 361 . . . . . . . . . . 11 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → 𝑀 ≤ (𝑘 + 1)))
29 uzind.6 . . . . . . . . . . . . 13 ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀𝑘) → (𝜒𝜃))
30293exp 1197 . . . . . . . . . . . 12 (𝑀 ∈ ℤ → (𝑘 ∈ ℤ → (𝑀𝑘 → (𝜒𝜃))))
3130imp4d 350 . . . . . . . . . . 11 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → 𝜃))
3228, 31jcad 305 . . . . . . . . . 10 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → (𝑀 ≤ (𝑘 + 1) ∧ 𝜃)))
3313, 32jcad 305 . . . . . . . . 9 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → ((𝑘 + 1) ∈ ℤ ∧ (𝑀 ≤ (𝑘 + 1) ∧ 𝜃))))
34 breq2 3993 . . . . . . . . . . 11 (𝑗 = 𝑘 → (𝑀𝑗𝑀𝑘))
35 uzind.2 . . . . . . . . . . 11 (𝑗 = 𝑘 → (𝜑𝜒))
3634, 35anbi12d 470 . . . . . . . . . 10 (𝑗 = 𝑘 → ((𝑀𝑗𝜑) ↔ (𝑀𝑘𝜒)))
3736elrab 2886 . . . . . . . . 9 (𝑘 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ (𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)))
38 breq2 3993 . . . . . . . . . . 11 (𝑗 = (𝑘 + 1) → (𝑀𝑗𝑀 ≤ (𝑘 + 1)))
39 uzind.3 . . . . . . . . . . 11 (𝑗 = (𝑘 + 1) → (𝜑𝜃))
4038, 39anbi12d 470 . . . . . . . . . 10 (𝑗 = (𝑘 + 1) → ((𝑀𝑗𝜑) ↔ (𝑀 ≤ (𝑘 + 1) ∧ 𝜃)))
4140elrab 2886 . . . . . . . . 9 ((𝑘 + 1) ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ ((𝑘 + 1) ∈ ℤ ∧ (𝑀 ≤ (𝑘 + 1) ∧ 𝜃)))
4233, 37, 413imtr4g 204 . . . . . . . 8 (𝑀 ∈ ℤ → (𝑘 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} → (𝑘 + 1) ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)}))
4342ralrimiv 2542 . . . . . . 7 (𝑀 ∈ ℤ → ∀𝑘 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} (𝑘 + 1) ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)})
44 peano5uzti 9320 . . . . . . 7 (𝑀 ∈ ℤ → ((𝑀 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ∧ ∀𝑘 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} (𝑘 + 1) ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)}) → {𝑤 ∈ ℤ ∣ 𝑀𝑤} ⊆ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)}))
4510, 43, 44mp2and 431 . . . . . 6 (𝑀 ∈ ℤ → {𝑤 ∈ ℤ ∣ 𝑀𝑤} ⊆ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)})
4645sseld 3146 . . . . 5 (𝑀 ∈ ℤ → (𝑁 ∈ {𝑤 ∈ ℤ ∣ 𝑀𝑤} → 𝑁 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)}))
47 breq2 3993 . . . . . 6 (𝑤 = 𝑁 → (𝑀𝑤𝑀𝑁))
4847elrab 2886 . . . . 5 (𝑁 ∈ {𝑤 ∈ ℤ ∣ 𝑀𝑤} ↔ (𝑁 ∈ ℤ ∧ 𝑀𝑁))
49 breq2 3993 . . . . . . 7 (𝑗 = 𝑁 → (𝑀𝑗𝑀𝑁))
50 uzind.4 . . . . . . 7 (𝑗 = 𝑁 → (𝜑𝜏))
5149, 50anbi12d 470 . . . . . 6 (𝑗 = 𝑁 → ((𝑀𝑗𝜑) ↔ (𝑀𝑁𝜏)))
5251elrab 2886 . . . . 5 (𝑁 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ (𝑁 ∈ ℤ ∧ (𝑀𝑁𝜏)))
5346, 48, 523imtr3g 203 . . . 4 (𝑀 ∈ ℤ → ((𝑁 ∈ ℤ ∧ 𝑀𝑁) → (𝑁 ∈ ℤ ∧ (𝑀𝑁𝜏))))
54533impib 1196 . . 3 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀𝑁) → (𝑁 ∈ ℤ ∧ (𝑀𝑁𝜏)))
5554simprd 113 . 2 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀𝑁) → (𝑀𝑁𝜏))
5655simprd 113 1 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀𝑁) → 𝜏)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  wb 104  w3a 973   = wceq 1348  wcel 2141  wral 2448  {crab 2452  wss 3121   class class class wbr 3989  (class class class)co 5853  cr 7773  1c1 7775   + caddc 7777   < clt 7954  cle 7955  cz 9212
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 4107  ax-pow 4160  ax-pr 4194  ax-un 4418  ax-setind 4521  ax-cnex 7865  ax-resscn 7866  ax-1cn 7867  ax-1re 7868  ax-icn 7869  ax-addcl 7870  ax-addrcl 7871  ax-mulcl 7872  ax-addcom 7874  ax-addass 7876  ax-distr 7878  ax-i2m1 7879  ax-0lt1 7880  ax-0id 7882  ax-rnegex 7883  ax-cnre 7885  ax-pre-ltirr 7886  ax-pre-ltwlin 7887  ax-pre-lttrn 7888  ax-pre-ltadd 7890
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 3568  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-int 3832  df-br 3990  df-opab 4051  df-id 4278  df-xp 4617  df-rel 4618  df-cnv 4619  df-co 4620  df-dm 4621  df-iota 5160  df-fun 5200  df-fv 5206  df-riota 5809  df-ov 5856  df-oprab 5857  df-mpo 5858  df-pnf 7956  df-mnf 7957  df-xr 7958  df-ltxr 7959  df-le 7960  df-sub 8092  df-neg 8093  df-inn 8879  df-n0 9136  df-z 9213
This theorem is referenced by:  uzind2  9324  uzind3  9325  nn0ind  9326  fzind  9327  resqrexlemdecn  10976  algcvga  12005  ennnfoneleminc  12366
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