Theorem fz0fzelfz0 13548

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 13532	. . . 4 ⊢ (𝑁 ∈ (0...𝑅) ↔ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅))
2		elfz2 13428	. . . . . 6 ⊢ (𝑀 ∈ (𝑁...𝑅) ↔ ((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)))
3		simplr 768	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → 𝑀 ∈ ℤ)
4		0red 11133	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 0 ∈ ℝ)
5		nn0re 12408	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℝ)
6	5	adantr 480	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 𝑁 ∈ ℝ)
7		zre 12490	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ ℝ)
8	7	adantl 481	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 𝑀 ∈ ℝ)
9	4, 6, 8	3jca 1128	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → (0 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ))
10	9	adantr 480	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → (0 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ 𝑀 ∈ ℝ))
11		nn0ge0 12424	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑁 ∈ ℕ0 → 0 ≤ 𝑁)
12	11	adantr 480	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) → 0 ≤ 𝑁)
13	12	anim1i 615	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑀 ∈ ℤ) ∧ 𝑁 ≤ 𝑀) → (0 ≤ 𝑁 ∧ 𝑁 ≤ 𝑀))
14		letr 11225	. . . . . . . . . . . . . . . . . 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 12499	. . . . . . . . . . . . . . . . 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 419	. . . . . . . . . . . . . . 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 1133	. . . . . . . . . . . . 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 491	. . . . . . . . . . 11 ⊢ (𝑀 ∈ ℤ → ((𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → 𝑀 ∈ ℕ0)))
23	22	3ad2ant3 1135	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) → ((𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → 𝑀 ∈ ℕ0)))
24	23	imp 406	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) → ((𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅) → 𝑀 ∈ ℕ0))
25	24	imp 406	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) ∧ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅)) → 𝑀 ∈ ℕ0)
26		simpr2 1196	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) ∧ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅)) → 𝑅 ∈ ℕ0)
27		simplrr 777	. . . . . . . 8 ⊢ ((((𝑁 ∈ ℤ ∧ 𝑅 ∈ ℤ ∧ 𝑀 ∈ ℤ) ∧ (𝑁 ≤ 𝑀 ∧ 𝑀 ≤ 𝑅)) ∧ (𝑁 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑁 ≤ 𝑅)) → 𝑀 ≤ 𝑅)
28	25, 26, 27	3jca 1128	. . . . . . 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 412	. . . . . 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 217	. . . . 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 217	. . 3 ⊢ (𝑁 ∈ (0...𝑅) → (𝑀 ∈ (𝑁...𝑅) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅)))
33	32	imp 406	. 2 ⊢ ((𝑁 ∈ (0...𝑅) ∧ 𝑀 ∈ (𝑁...𝑅)) → (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅))
34		elfz2nn0 13532	. 2 ⊢ (𝑀 ∈ (0...𝑅) ↔ (𝑀 ∈ ℕ0 ∧ 𝑅 ∈ ℕ0 ∧ 𝑀 ≤ 𝑅))
35	33, 34	sylibr 234	1 ⊢ ((𝑁 ∈ (0...𝑅) ∧ 𝑀 ∈ (𝑁...𝑅)) → 𝑀 ∈ (0...𝑅))

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1086   ∈ wcel 2113   class class class wbr 5096  (class class class)co 7356  ℝcr 11023  0cc0 11024   ≤ cle 11165  ℕ₀cn0 12399  ℤcz 12486  ...cfz 13421

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2706  ax-sep 5239  ax-nul 5249  ax-pow 5308  ax-pr 5375  ax-un 7678  ax-cnex 11080  ax-resscn 11081  ax-1cn 11082  ax-icn 11083  ax-addcl 11084  ax-addrcl 11085  ax-mulcl 11086  ax-mulrcl 11087  ax-mulcom 11088  ax-addass 11089  ax-mulass 11090  ax-distr 11091  ax-i2m1 11092  ax-1ne0 11093  ax-1rid 11094  ax-rnegex 11095  ax-rrecex 11096  ax-cnre 11097  ax-pre-lttri 11098  ax-pre-lttrn 11099  ax-pre-ltadd 11100  ax-pre-mulgt0 11101

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2567  df-clab 2713  df-cleq 2726  df-clel 2809  df-nfc 2883  df-ne 2931  df-nel 3035  df-ral 3050  df-rex 3059  df-reu 3349  df-rab 3398  df-v 3440  df-sbc 3739  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4579  df-pr 4581  df-op 4585  df-uni 4862  df-iun 4946  df-br 5097  df-opab 5159  df-mpt 5178  df-tr 5204  df-id 5517  df-eprel 5522  df-po 5530  df-so 5531  df-fr 5575  df-we 5577  df-xp 5628  df-rel 5629  df-cnv 5630  df-co 5631  df-dm 5632  df-rn 5633  df-res 5634  df-ima 5635  df-pred 6257  df-ord 6318  df-on 6319  df-lim 6320  df-suc 6321  df-iota 6446  df-fun 6492  df-fn 6493  df-f 6494  df-f1 6495  df-fo 6496  df-f1o 6497  df-fv 6498  df-riota 7313  df-ov 7359  df-oprab 7360  df-mpo 7361  df-om 7807  df-1st 7931  df-2nd 7932  df-frecs 8221  df-wrecs 8252  df-recs 8301  df-rdg 8339  df-er 8633  df-en 8882  df-dom 8883  df-sdom 8884  df-pnf 11166  df-mnf 11167  df-xr 11168  df-ltxr 11169  df-le 11170  df-sub 11364  df-neg 11365  df-nn 12144  df-n0 12400  df-z 12487  df-uz 12750  df-fz 13422

This theorem is referenced by:  fz0fzdiffz0  13551  fourierdlem15  46308