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Theorem uzind 9689
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 9581 . . . . . . . . . . 11 (𝑀 ∈ ℤ → 𝑀 ∈ ℝ)
21leidd 8788 . . . . . . . . . 10 (𝑀 ∈ ℤ → 𝑀𝑀)
3 uzind.5 . . . . . . . . . 10 (𝑀 ∈ ℤ → 𝜓)
42, 3jca 306 . . . . . . . . 9 (𝑀 ∈ ℤ → (𝑀𝑀𝜓))
54ancli 323 . . . . . . . 8 (𝑀 ∈ ℤ → (𝑀 ∈ ℤ ∧ (𝑀𝑀𝜓)))
6 breq2 4113 . . . . . . . . . 10 (𝑗 = 𝑀 → (𝑀𝑗𝑀𝑀))
7 uzind.1 . . . . . . . . . 10 (𝑗 = 𝑀 → (𝜑𝜓))
86, 7anbi12d 473 . . . . . . . . 9 (𝑗 = 𝑀 → ((𝑀𝑗𝜑) ↔ (𝑀𝑀𝜓)))
98elrab 2973 . . . . . . . 8 (𝑀 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ (𝑀 ∈ ℤ ∧ (𝑀𝑀𝜓)))
105, 9sylibr 134 . . . . . . 7 (𝑀 ∈ ℤ → 𝑀 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)})
11 peano2z 9613 . . . . . . . . . . . 12 (𝑘 ∈ ℤ → (𝑘 + 1) ∈ ℤ)
1211a1i 9 . . . . . . . . . . 11 (𝑀 ∈ ℤ → (𝑘 ∈ ℤ → (𝑘 + 1) ∈ ℤ))
1312adantrd 279 . . . . . . . . . 10 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → (𝑘 + 1) ∈ ℤ))
14 zre 9581 . . . . . . . . . . . . . 14 (𝑘 ∈ ℤ → 𝑘 ∈ ℝ)
15 ltp1 9118 . . . . . . . . . . . . . . . . 17 (𝑘 ∈ ℝ → 𝑘 < (𝑘 + 1))
1615adantl 277 . . . . . . . . . . . . . . . 16 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → 𝑘 < (𝑘 + 1))
17 peano2re 8409 . . . . . . . . . . . . . . . . . 18 (𝑘 ∈ ℝ → (𝑘 + 1) ∈ ℝ)
1817ancli 323 . . . . . . . . . . . . . . . . 17 (𝑘 ∈ ℝ → (𝑘 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ))
19 lelttr 8362 . . . . . . . . . . . . . . . . . 18 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ) → ((𝑀𝑘𝑘 < (𝑘 + 1)) → 𝑀 < (𝑘 + 1)))
20193expb 1231 . . . . . . . . . . . . . . . . 17 ((𝑀 ∈ ℝ ∧ (𝑘 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ)) → ((𝑀𝑘𝑘 < (𝑘 + 1)) → 𝑀 < (𝑘 + 1)))
2118, 20sylan2 286 . . . . . . . . . . . . . . . 16 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → ((𝑀𝑘𝑘 < (𝑘 + 1)) → 𝑀 < (𝑘 + 1)))
2216, 21mpan2d 428 . . . . . . . . . . . . . . 15 ((𝑀 ∈ ℝ ∧ 𝑘 ∈ ℝ) → (𝑀𝑘𝑀 < (𝑘 + 1)))
23 ltle 8361 . . . . . . . . . . . . . . . 16 ((𝑀 ∈ ℝ ∧ (𝑘 + 1) ∈ ℝ) → (𝑀 < (𝑘 + 1) → 𝑀 ≤ (𝑘 + 1)))
2417, 23sylan2 286 . . . . . . . . . . . . . . 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 289 . . . . . . . . . . . . 13 ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑀𝑘𝑀 ≤ (𝑘 + 1)))
2726adantrd 279 . . . . . . . . . . . 12 ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ) → ((𝑀𝑘𝜒) → 𝑀 ≤ (𝑘 + 1)))
2827expimpd 363 . . . . . . . . . . 11 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → 𝑀 ≤ (𝑘 + 1)))
29 uzind.6 . . . . . . . . . . . . 13 ((𝑀 ∈ ℤ ∧ 𝑘 ∈ ℤ ∧ 𝑀𝑘) → (𝜒𝜃))
30293exp 1229 . . . . . . . . . . . 12 (𝑀 ∈ ℤ → (𝑘 ∈ ℤ → (𝑀𝑘 → (𝜒𝜃))))
3130imp4d 352 . . . . . . . . . . 11 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → 𝜃))
3228, 31jcad 307 . . . . . . . . . 10 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → (𝑀 ≤ (𝑘 + 1) ∧ 𝜃)))
3313, 32jcad 307 . . . . . . . . 9 (𝑀 ∈ ℤ → ((𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)) → ((𝑘 + 1) ∈ ℤ ∧ (𝑀 ≤ (𝑘 + 1) ∧ 𝜃))))
34 breq2 4113 . . . . . . . . . . 11 (𝑗 = 𝑘 → (𝑀𝑗𝑀𝑘))
35 uzind.2 . . . . . . . . . . 11 (𝑗 = 𝑘 → (𝜑𝜒))
3634, 35anbi12d 473 . . . . . . . . . 10 (𝑗 = 𝑘 → ((𝑀𝑗𝜑) ↔ (𝑀𝑘𝜒)))
3736elrab 2973 . . . . . . . . 9 (𝑘 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ (𝑘 ∈ ℤ ∧ (𝑀𝑘𝜒)))
38 breq2 4113 . . . . . . . . . . 11 (𝑗 = (𝑘 + 1) → (𝑀𝑗𝑀 ≤ (𝑘 + 1)))
39 uzind.3 . . . . . . . . . . 11 (𝑗 = (𝑘 + 1) → (𝜑𝜃))
4038, 39anbi12d 473 . . . . . . . . . 10 (𝑗 = (𝑘 + 1) → ((𝑀𝑗𝜑) ↔ (𝑀 ≤ (𝑘 + 1) ∧ 𝜃)))
4140elrab 2973 . . . . . . . . 9 ((𝑘 + 1) ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ ((𝑘 + 1) ∈ ℤ ∧ (𝑀 ≤ (𝑘 + 1) ∧ 𝜃)))
4233, 37, 413imtr4g 205 . . . . . . . 8 (𝑀 ∈ ℤ → (𝑘 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} → (𝑘 + 1) ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)}))
4342ralrimiv 2614 . . . . . . 7 (𝑀 ∈ ℤ → ∀𝑘 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} (𝑘 + 1) ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)})
44 peano5uzti 9686 . . . . . . 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 433 . . . . . 6 (𝑀 ∈ ℤ → {𝑤 ∈ ℤ ∣ 𝑀𝑤} ⊆ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)})
4645sseld 3237 . . . . 5 (𝑀 ∈ ℤ → (𝑁 ∈ {𝑤 ∈ ℤ ∣ 𝑀𝑤} → 𝑁 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)}))
47 breq2 4113 . . . . . 6 (𝑤 = 𝑁 → (𝑀𝑤𝑀𝑁))
4847elrab 2973 . . . . 5 (𝑁 ∈ {𝑤 ∈ ℤ ∣ 𝑀𝑤} ↔ (𝑁 ∈ ℤ ∧ 𝑀𝑁))
49 breq2 4113 . . . . . . 7 (𝑗 = 𝑁 → (𝑀𝑗𝑀𝑁))
50 uzind.4 . . . . . . 7 (𝑗 = 𝑁 → (𝜑𝜏))
5149, 50anbi12d 473 . . . . . 6 (𝑗 = 𝑁 → ((𝑀𝑗𝜑) ↔ (𝑀𝑁𝜏)))
5251elrab 2973 . . . . 5 (𝑁 ∈ {𝑗 ∈ ℤ ∣ (𝑀𝑗𝜑)} ↔ (𝑁 ∈ ℤ ∧ (𝑀𝑁𝜏)))
5346, 48, 523imtr3g 204 . . . 4 (𝑀 ∈ ℤ → ((𝑁 ∈ ℤ ∧ 𝑀𝑁) → (𝑁 ∈ ℤ ∧ (𝑀𝑁𝜏))))
54533impib 1228 . . 3 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀𝑁) → (𝑁 ∈ ℤ ∧ (𝑀𝑁𝜏)))
5554simprd 114 . 2 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀𝑁) → (𝑀𝑁𝜏))
5655simprd 114 1 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑀𝑁) → 𝜏)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104  wb 105  w3a 1005   = wceq 1398  wcel 2203  wral 2520  {crab 2524  wss 3211   class class class wbr 4109  (class class class)co 6050  cr 8126  1c1 8128   + caddc 8130   < clt 8308  cle 8309  cz 9577
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 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2205  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-addcom 8227  ax-addass 8229  ax-distr 8231  ax-i2m1 8232  ax-0lt1 8233  ax-0id 8235  ax-rnegex 8236  ax-cnre 8238  ax-pre-ltirr 8239  ax-pre-ltwlin 8240  ax-pre-lttrn 8241  ax-pre-ltadd 8243
This theorem depends on definitions:  df-bi 117  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-reu 2527  df-rab 2529  df-v 2815  df-sbc 3043  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-br 4110  df-opab 4172  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-iota 5312  df-fun 5354  df-fv 5360  df-riota 6003  df-ov 6053  df-oprab 6054  df-mpo 6055  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-sub 8446  df-neg 8447  df-inn 9238  df-n0 9497  df-z 9578
This theorem is referenced by:  uzind2  9690  uzind3  9691  nn0ind  9692  fzind  9693  resqrexlemdecn  11697  algcvga  12748  ennnfoneleminc  13162
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