Theorem fz0fzelfz0 13362

Description: If a member of a finite set of sequential integers with a lower bound being a member of a finite set of sequential nonnegative integers with the same upper bound, this member is also a member of the finite set of sequential nonnegative integers. (Contributed by Alexander van der Vekens, 21-Apr-2018.)

Assertion

Ref	Expression
fz0fzelfz0	⊢ ((𝑁 ∈ (0...𝑅) ∧ 𝑀 ∈ (𝑁...𝑅)) → 𝑀 ∈ (0...𝑅))

Proof of Theorem fz0fzelfz0

Step	Hyp	Ref	Expression
1		elfz2nn0 13347	. . . 4 ⊢ (𝑁 ∈ (0...𝑅) ↔ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅))
2		elfz2 13246	. . . . . 6 ⊢ (𝑀 ∈ (𝑁...𝑅) ↔ ((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)))
3		simplr 766	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → 𝑀 ∈ ℤ)
4		0red 10978	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 0 ∈ ℝ)
5		nn0re 12242	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℝ)
6	5	adantr 481	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 𝑁 ∈ ℝ)
7		zre 12323	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ)
8	7	adantl 482	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 𝑀 ∈ ℝ)
9	4, 6, 8	3jca 1127	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → (0 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ))
10	9	adantr 481	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → (0 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ))
11		nn0ge0 12258	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑁 ∈ ℕ0 → 0 ≤ 𝑁)
12	11	adantr 481	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 0 ≤ 𝑁)
13	12	anim1i 615	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → (0 ≤ 𝑁 ∧ 𝑁 ≤ 𝑀))
14		letr 11069	. . . . . . . . . . . . . . . . . 18 ⊢ ((0 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ) → ((0 ≤ 𝑁 ∧ 𝑁 ≤ 𝑀) → 0 ≤ 𝑀))
15	10, 13, 14	sylc 65	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → 0 ≤ 𝑀)
16		elnn0z 12332	. . . . . . . . . . . . . . . . 17 ⊢ (𝑀 ∈ ℕ0 ↔ (𝑀 ∈ ℤ ∧ 0 ≤ 𝑀))
17	3, 15, 16	sylanbrc 583	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → 𝑀 ∈ ℕ0)
18	17	exp31 420	. . . . . . . . . . . . . . 15 ⊢ (𝑁 ∈ ℕ0 → (𝑀 ∈ ℤ → (𝑁 ≤ 𝑀 → 𝑀 ∈ ℕ0)))
19	18	com23 86	. . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ0 → (𝑁 ≤ 𝑀 → (𝑀 ∈ ℤ → 𝑀 ∈ ℕ0)))
20	19	3ad2ant1 1132	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → (𝑁 ≤ 𝑀 → (𝑀 ∈ ℤ → 𝑀 ∈ ℕ0)))
21	20	com13 88	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℤ → (𝑁 ≤ 𝑀 → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → 𝑀 ∈ ℕ0)))
22	21	adantrd 492	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℤ → ((𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → 𝑀 ∈ ℕ0)))
23	22	3ad2ant3 1134	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) → ((𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → 𝑀 ∈ ℕ0)))
24	23	imp 407	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → 𝑀 ∈ ℕ0))
25	24	imp 407	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) ∧ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅)) → 𝑀 ∈ ℕ0)
26		simpr2 1194	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) ∧ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅)) → 𝑅 ∈ ℕ0)
27		simplrr 775	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) ∧ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅)) → 𝑀 ≤ 𝑅)
28	25, 26, 27	3jca 1127	. . . . . . 7 ⊢ ((((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) ∧ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅)) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅))
29	28	ex 413	. . . . . 6 ⊢ (((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅)))
30	2, 29	sylbi 216	. . . . 5 ⊢ (𝑀 ∈ (𝑁...𝑅) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅)))
31	30	com12 32	. . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → (𝑀 ∈ (𝑁...𝑅) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅)))
32	1, 31	sylbi 216	. . 3 ⊢ (𝑁 ∈ (0...𝑅) → (𝑀 ∈ (𝑁...𝑅) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅)))
33	32	imp 407	. 2 ⊢ ((𝑁 ∈ (0...𝑅) ∧ 𝑀 ∈ (𝑁...𝑅)) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅))
34		elfz2nn0 13347	. 2 ⊢ (𝑀 ∈ (0...𝑅) ↔ (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅))
35	33, 34	sylibr 233	1 ⊢ ((𝑁 ∈ (0...𝑅) ∧ 𝑀 ∈ (𝑁...𝑅)) → 𝑀 ∈ (0...𝑅))

Syntax hints:   → wi 4   ∧ wa 396   ∧ w3a 1086   ∈ wcel 2106   class class class wbr 5074  (class class class)co 7275  ℝcr 10870  0cc0 10871   ≤ cle 11010  ℕ₀cn0 12233  ℤcz 12319  ...cfz 13239

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588  ax-cnex 10927  ax-resscn 10928  ax-1cn 10929  ax-icn 10930  ax-addcl 10931  ax-addrcl 10932  ax-mulcl 10933  ax-mulrcl 10934  ax-mulcom 10935  ax-addass 10936  ax-mulass 10937  ax-distr 10938  ax-i2m1 10939  ax-1ne0 10940  ax-1rid 10941  ax-rnegex 10942  ax-rrecex 10943  ax-cnre 10944  ax-pre-lttri 10945  ax-pre-lttrn 10946  ax-pre-ltadd 10947  ax-pre-mulgt0 10948

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-nel 3050  df-ral 3069  df-rex 3070  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-pred 6202  df-ord 6269  df-on 6270  df-lim 6271  df-suc 6272  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-riota 7232  df-ov 7278  df-oprab 7279  df-mpo 7280  df-om 7713  df-1st 7831  df-2nd 7832  df-frecs 8097  df-wrecs 8128  df-recs 8202  df-rdg 8241  df-er 8498  df-en 8734  df-dom 8735  df-sdom 8736  df-pnf 11011  df-mnf 11012  df-xr 11013  df-ltxr 11014  df-le 11015  df-sub 11207  df-neg 11208  df-nn 11974  df-n0 12234  df-z 12320  df-uz 12583  df-fz 13240

This theorem is referenced by:  fz0fzdiffz0  13365  fourierdlem15  43663