Theorem fzsplit1nn0 40492

Description: Split a finite 1-based set of integers in the middle, allowing either end to be empty ((1...0)). (Contributed by Stefan O'Rear, 8-Oct-2014.)

Assertion

Ref	Expression
fzsplit1nn0	⊢ ((𝐴 ∈ ℕ0 ∧ 𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵)))

Proof of Theorem fzsplit1nn0

Step	Hyp	Ref	Expression
1		elnn0 12165	. . 3 ⊢ (𝐴 ∈ ℕ0 ↔ (𝐴 ∈ ℕ ∨ 𝐴 = 0))
2		1zzd 12281	. . . . . . 7 ⊢ ((𝐴 ∈ ℕ ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → 1 ∈ ℤ)
3		nn0z 12273	. . . . . . . 8 ⊢ (𝐵 ∈ ℕ0 → 𝐵 ∈ ℤ)
4	3	ad2antrl 724	. . . . . . 7 ⊢ ((𝐴 ∈ ℕ ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → 𝐵 ∈ ℤ)
5		nnz 12272	. . . . . . . 8 ⊢ (𝐴 ∈ ℕ → 𝐴 ∈ ℤ)
6	5	adantr 480	. . . . . . 7 ⊢ ((𝐴 ∈ ℕ ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → 𝐴 ∈ ℤ)
7		nnge1 11931	. . . . . . . 8 ⊢ (𝐴 ∈ ℕ → 1 ≤ 𝐴)
8	7	adantr 480	. . . . . . 7 ⊢ ((𝐴 ∈ ℕ ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → 1 ≤ 𝐴)
9		simprr 769	. . . . . . 7 ⊢ ((𝐴 ∈ ℕ ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → 𝐴 ≤ 𝐵)
10	2, 4, 6, 8, 9	elfzd 13176	. . . . . 6 ⊢ ((𝐴 ∈ ℕ ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → 𝐴 ∈ (1...𝐵))
11		fzsplit 13211	. . . . . 6 ⊢ (𝐴 ∈ (1...𝐵) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵)))
12	10, 11	syl 17	. . . . 5 ⊢ ((𝐴 ∈ ℕ ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵)))
13		uncom 4083	. . . . . 6 ⊢ ((1...𝐴) ∪ ((𝐴 + 1)...𝐵)) = (((𝐴 + 1)...𝐵) ∪ (1...𝐴))
14		oveq1 7262	. . . . . . . . . . 11 ⊢ (𝐴 = 0 → (𝐴 + 1) = (0 + 1))
15	14	adantr 480	. . . . . . . . . 10 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (𝐴 + 1) = (0 + 1))
16		0p1e1 12025	. . . . . . . . . 10 ⊢ (0 + 1) = 1
17	15, 16	eqtrdi 2795	. . . . . . . . 9 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (𝐴 + 1) = 1)
18	17	oveq1d 7270	. . . . . . . 8 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → ((𝐴 + 1)...𝐵) = (1...𝐵))
19		oveq2 7263	. . . . . . . . . 10 ⊢ (𝐴 = 0 → (1...𝐴) = (1...0))
20	19	adantr 480	. . . . . . . . 9 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (1...𝐴) = (1...0))
21		fz10 13206	. . . . . . . . 9 ⊢ (1...0) = ∅
22	20, 21	eqtrdi 2795	. . . . . . . 8 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (1...𝐴) = ∅)
23	18, 22	uneq12d 4094	. . . . . . 7 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (((𝐴 + 1)...𝐵) ∪ (1...𝐴)) = ((1...𝐵) ∪ ∅))
24		un0 4321	. . . . . . 7 ⊢ ((1...𝐵) ∪ ∅) = (1...𝐵)
25	23, 24	eqtrdi 2795	. . . . . 6 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (((𝐴 + 1)...𝐵) ∪ (1...𝐴)) = (1...𝐵))
26	13, 25	eqtr2id 2792	. . . . 5 ⊢ ((𝐴 = 0 ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵)))
27	12, 26	jaoian 953	. . . 4 ⊢ (((𝐴 ∈ ℕ ∨ 𝐴 = 0) ∧ (𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵)) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵)))
28	27	ex 412	. . 3 ⊢ ((𝐴 ∈ ℕ ∨ 𝐴 = 0) → ((𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵))))
29	1, 28	sylbi 216	. 2 ⊢ (𝐴 ∈ ℕ0 → ((𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵))))
30	29	3impib 1114	1 ⊢ ((𝐴 ∈ ℕ0 ∧ 𝐵 ∈ ℕ0 ∧ 𝐴 ≤ 𝐵) → (1...𝐵) = ((1...𝐴) ∪ ((𝐴 + 1)...𝐵)))

Syntax hints:   → wi 4   ∧ wa 395   ∨ wo 843   ∧ w3a 1085   = wceq 1539   ∈ wcel 2108   ∪ cun 3881  ∅c0 4253   class class class wbr 5070  (class class class)co 7255  0cc0 10802  1c1 10803   + caddc 10805   ≤ cle 10941  ℕcn 11903  ℕ₀cn0 12163  ℤcz 12249  ...cfz 13168

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-om 7688  df-1st 7804  df-2nd 7805  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-er 8456  df-en 8692  df-dom 8693  df-sdom 8694  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-nn 11904  df-n0 12164  df-z 12250  df-uz 12512  df-fz 13169

This theorem is referenced by:  eldioph2lem1  40498