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Theorem fz0fzdiffz0 10065
Description: The difference of an integer in a finite set of sequential nonnegative integers and and an integer of a finite set of sequential integers with the same upper bound and the nonnegative integer as lower bound is a member of the finite set of sequential nonnegative integers. (Contributed by Alexander van der Vekens, 6-Jun-2018.)
Assertion
Ref Expression
fz0fzdiffz0 ((𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → (𝐾𝑀) ∈ (0...𝑁))

Proof of Theorem fz0fzdiffz0
StepHypRef Expression
1 fz0fzelfz0 10062 . . 3 ((𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → 𝐾 ∈ (0...𝑁))
2 elfzle1 9962 . . . . . . 7 (𝐾 ∈ (𝑀...𝑁) → 𝑀𝐾)
32adantl 275 . . . . . 6 ((𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → 𝑀𝐾)
43adantl 275 . . . . 5 ((𝐾 ∈ (0...𝑁) ∧ (𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁))) → 𝑀𝐾)
5 elfznn0 10049 . . . . . . 7 (𝑀 ∈ (0...𝑁) → 𝑀 ∈ ℕ0)
65adantr 274 . . . . . 6 ((𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → 𝑀 ∈ ℕ0)
7 elfznn0 10049 . . . . . 6 (𝐾 ∈ (0...𝑁) → 𝐾 ∈ ℕ0)
8 nn0sub 9257 . . . . . 6 ((𝑀 ∈ ℕ0𝐾 ∈ ℕ0) → (𝑀𝐾 ↔ (𝐾𝑀) ∈ ℕ0))
96, 7, 8syl2anr 288 . . . . 5 ((𝐾 ∈ (0...𝑁) ∧ (𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁))) → (𝑀𝐾 ↔ (𝐾𝑀) ∈ ℕ0))
104, 9mpbid 146 . . . 4 ((𝐾 ∈ (0...𝑁) ∧ (𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁))) → (𝐾𝑀) ∈ ℕ0)
11 elfz3nn0 10050 . . . . 5 (𝐾 ∈ (0...𝑁) → 𝑁 ∈ ℕ0)
1211adantr 274 . . . 4 ((𝐾 ∈ (0...𝑁) ∧ (𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁))) → 𝑁 ∈ ℕ0)
13 elfz2nn0 10047 . . . . . . 7 (𝑀 ∈ (0...𝑁) ↔ (𝑀 ∈ ℕ0𝑁 ∈ ℕ0𝑀𝑁))
14 elfz2 9951 . . . . . . . . . . 11 (𝐾 ∈ (𝑀...𝑁) ↔ ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ (𝑀𝐾𝐾𝑁)))
15 zsubcl 9232 . . . . . . . . . . . . . . . . . . . . . . 23 ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝐾𝑀) ∈ ℤ)
1615zred 9313 . . . . . . . . . . . . . . . . . . . . . 22 ((𝐾 ∈ ℤ ∧ 𝑀 ∈ ℤ) → (𝐾𝑀) ∈ ℝ)
1716ancoms 266 . . . . . . . . . . . . . . . . . . . . 21 ((𝑀 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝐾𝑀) ∈ ℝ)
18173adant2 1006 . . . . . . . . . . . . . . . . . . . 20 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝐾𝑀) ∈ ℝ)
19 zre 9195 . . . . . . . . . . . . . . . . . . . . 21 (𝐾 ∈ ℤ → 𝐾 ∈ ℝ)
20193ad2ant3 1010 . . . . . . . . . . . . . . . . . . . 20 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → 𝐾 ∈ ℝ)
21 zre 9195 . . . . . . . . . . . . . . . . . . . . 21 (𝑁 ∈ ℤ → 𝑁 ∈ ℝ)
22213ad2ant2 1009 . . . . . . . . . . . . . . . . . . . 20 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → 𝑁 ∈ ℝ)
2318, 20, 223jca 1167 . . . . . . . . . . . . . . . . . . 19 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → ((𝐾𝑀) ∈ ℝ ∧ 𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ))
2423adantr 274 . . . . . . . . . . . . . . . . . 18 (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℕ0) → ((𝐾𝑀) ∈ ℝ ∧ 𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ))
2524adantr 274 . . . . . . . . . . . . . . . . 17 ((((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℕ0) ∧ 𝐾𝑁) → ((𝐾𝑀) ∈ ℝ ∧ 𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ))
26 nn0ge0 9139 . . . . . . . . . . . . . . . . . . . 20 (𝑀 ∈ ℕ0 → 0 ≤ 𝑀)
2726adantl 275 . . . . . . . . . . . . . . . . . . 19 (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℕ0) → 0 ≤ 𝑀)
28 nn0re 9123 . . . . . . . . . . . . . . . . . . . 20 (𝑀 ∈ ℕ0𝑀 ∈ ℝ)
29 subge02 8376 . . . . . . . . . . . . . . . . . . . 20 ((𝐾 ∈ ℝ ∧ 𝑀 ∈ ℝ) → (0 ≤ 𝑀 ↔ (𝐾𝑀) ≤ 𝐾))
3020, 28, 29syl2an 287 . . . . . . . . . . . . . . . . . . 19 (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℕ0) → (0 ≤ 𝑀 ↔ (𝐾𝑀) ≤ 𝐾))
3127, 30mpbid 146 . . . . . . . . . . . . . . . . . 18 (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℕ0) → (𝐾𝑀) ≤ 𝐾)
3231anim1i 338 . . . . . . . . . . . . . . . . 17 ((((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℕ0) ∧ 𝐾𝑁) → ((𝐾𝑀) ≤ 𝐾𝐾𝑁))
33 letr 7981 . . . . . . . . . . . . . . . . 17 (((𝐾𝑀) ∈ ℝ ∧ 𝐾 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (((𝐾𝑀) ≤ 𝐾𝐾𝑁) → (𝐾𝑀) ≤ 𝑁))
3425, 32, 33sylc 62 . . . . . . . . . . . . . . . 16 ((((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ 𝑀 ∈ ℕ0) ∧ 𝐾𝑁) → (𝐾𝑀) ≤ 𝑁)
3534exp31 362 . . . . . . . . . . . . . . 15 ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑀 ∈ ℕ0 → (𝐾𝑁 → (𝐾𝑀) ≤ 𝑁)))
3635a1i 9 . . . . . . . . . . . . . 14 (𝑁 ∈ ℕ0 → ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑀 ∈ ℕ0 → (𝐾𝑁 → (𝐾𝑀) ≤ 𝑁))))
3736com14 88 . . . . . . . . . . . . 13 (𝐾𝑁 → ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑀 ∈ ℕ0 → (𝑁 ∈ ℕ0 → (𝐾𝑀) ≤ 𝑁))))
3837adantl 275 . . . . . . . . . . . 12 ((𝑀𝐾𝐾𝑁) → ((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) → (𝑀 ∈ ℕ0 → (𝑁 ∈ ℕ0 → (𝐾𝑀) ≤ 𝑁))))
3938impcom 124 . . . . . . . . . . 11 (((𝑀 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝐾 ∈ ℤ) ∧ (𝑀𝐾𝐾𝑁)) → (𝑀 ∈ ℕ0 → (𝑁 ∈ ℕ0 → (𝐾𝑀) ≤ 𝑁)))
4014, 39sylbi 120 . . . . . . . . . 10 (𝐾 ∈ (𝑀...𝑁) → (𝑀 ∈ ℕ0 → (𝑁 ∈ ℕ0 → (𝐾𝑀) ≤ 𝑁)))
4140com13 80 . . . . . . . . 9 (𝑁 ∈ ℕ0 → (𝑀 ∈ ℕ0 → (𝐾 ∈ (𝑀...𝑁) → (𝐾𝑀) ≤ 𝑁)))
4241impcom 124 . . . . . . . 8 ((𝑀 ∈ ℕ0𝑁 ∈ ℕ0) → (𝐾 ∈ (𝑀...𝑁) → (𝐾𝑀) ≤ 𝑁))
43423adant3 1007 . . . . . . 7 ((𝑀 ∈ ℕ0𝑁 ∈ ℕ0𝑀𝑁) → (𝐾 ∈ (𝑀...𝑁) → (𝐾𝑀) ≤ 𝑁))
4413, 43sylbi 120 . . . . . 6 (𝑀 ∈ (0...𝑁) → (𝐾 ∈ (𝑀...𝑁) → (𝐾𝑀) ≤ 𝑁))
4544imp 123 . . . . 5 ((𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → (𝐾𝑀) ≤ 𝑁)
4645adantl 275 . . . 4 ((𝐾 ∈ (0...𝑁) ∧ (𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁))) → (𝐾𝑀) ≤ 𝑁)
4710, 12, 463jca 1167 . . 3 ((𝐾 ∈ (0...𝑁) ∧ (𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁))) → ((𝐾𝑀) ∈ ℕ0𝑁 ∈ ℕ0 ∧ (𝐾𝑀) ≤ 𝑁))
481, 47mpancom 419 . 2 ((𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → ((𝐾𝑀) ∈ ℕ0𝑁 ∈ ℕ0 ∧ (𝐾𝑀) ≤ 𝑁))
49 elfz2nn0 10047 . 2 ((𝐾𝑀) ∈ (0...𝑁) ↔ ((𝐾𝑀) ∈ ℕ0𝑁 ∈ ℕ0 ∧ (𝐾𝑀) ≤ 𝑁))
5048, 49sylibr 133 1 ((𝑀 ∈ (0...𝑁) ∧ 𝐾 ∈ (𝑀...𝑁)) → (𝐾𝑀) ∈ (0...𝑁))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  wb 104  w3a 968  wcel 2136   class class class wbr 3982  (class class class)co 5842  cr 7752  0cc0 7753  cle 7934  cmin 8069  0cn0 9114  cz 9191  ...cfz 9944
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 604  ax-in2 605  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-13 2138  ax-14 2139  ax-ext 2147  ax-sep 4100  ax-pow 4153  ax-pr 4187  ax-un 4411  ax-setind 4514  ax-cnex 7844  ax-resscn 7845  ax-1cn 7846  ax-1re 7847  ax-icn 7848  ax-addcl 7849  ax-addrcl 7850  ax-mulcl 7851  ax-addcom 7853  ax-addass 7855  ax-distr 7857  ax-i2m1 7858  ax-0lt1 7859  ax-0id 7861  ax-rnegex 7862  ax-cnre 7864  ax-pre-ltirr 7865  ax-pre-ltwlin 7866  ax-pre-lttrn 7867  ax-pre-ltadd 7869
This theorem depends on definitions:  df-bi 116  df-3or 969  df-3an 970  df-tru 1346  df-fal 1349  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ne 2337  df-nel 2432  df-ral 2449  df-rex 2450  df-reu 2451  df-rab 2453  df-v 2728  df-sbc 2952  df-dif 3118  df-un 3120  df-in 3122  df-ss 3129  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-uni 3790  df-int 3825  df-br 3983  df-opab 4044  df-mpt 4045  df-id 4271  df-xp 4610  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-rn 4615  df-res 4616  df-ima 4617  df-iota 5153  df-fun 5190  df-fn 5191  df-f 5192  df-fv 5196  df-riota 5798  df-ov 5845  df-oprab 5846  df-mpo 5847  df-pnf 7935  df-mnf 7936  df-xr 7937  df-ltxr 7938  df-le 7939  df-sub 8071  df-neg 8072  df-inn 8858  df-n0 9115  df-z 9192  df-uz 9467  df-fz 9945
This theorem is referenced by: (None)
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