Theorem iccpartres 48024

Description: The restriction of a partition is a partition. (Contributed by AV, 16-Jul-2020.)

Assertion

Ref	Expression
iccpartres	⊢ ((𝑀 ∈ ℕ ∧ 𝑃 ∈ (RePart‘(𝑀 + 1))) → (𝑃 ↾ (0...𝑀)) ∈ (RePart‘𝑀))

Proof of Theorem iccpartres

Dummy variable 𝑖 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		peano2nn 12222	. . . 4 ⊢ (𝑀 ∈ ℕ → (𝑀 + 1) ∈ ℕ)
2		iccpart 48022	. . . 4 ⊢ ((𝑀 + 1) ∈ ℕ → (𝑃 ∈ (RePart‘(𝑀 + 1)) ↔ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))))
3	1, 2	syl 17	. . 3 ⊢ (𝑀 ∈ ℕ → (𝑃 ∈ (RePart‘(𝑀 + 1)) ↔ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))))
4		simpl 486	. . . . . 6 ⊢ ((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))) → 𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))))
5		nnz 12589	. . . . . . . . 9 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℤ)
6		uzid 12854	. . . . . . . . 9 ⊢ (𝑀 ∈ ℤ → 𝑀 ∈ (ℤ≥‘𝑀))
7	5, 6	syl 17	. . . . . . . 8 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ (ℤ≥‘𝑀))
8		peano2uz 12902	. . . . . . . 8 ⊢ (𝑀 ∈ (ℤ≥‘𝑀) → (𝑀 + 1) ∈ (ℤ≥‘𝑀))
9	7, 8	syl 17	. . . . . . 7 ⊢ (𝑀 ∈ ℕ → (𝑀 + 1) ∈ (ℤ≥‘𝑀))
10		fzss2 13569	. . . . . . 7 ⊢ ((𝑀 + 1) ∈ (ℤ≥‘𝑀) → (0...𝑀) ⊆ (0...(𝑀 + 1)))
11	9, 10	syl 17	. . . . . 6 ⊢ (𝑀 ∈ ℕ → (0...𝑀) ⊆ (0...(𝑀 + 1)))
12		elmapssres 8848	. . . . . 6 ⊢ ((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ (0...𝑀) ⊆ (0...(𝑀 + 1))) → (𝑃 ↾ (0...𝑀)) ∈ (ℝ* ↑m (0...𝑀)))
13	4, 11, 12	syl2anr 606	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))) → (𝑃 ↾ (0...𝑀)) ∈ (ℝ* ↑m (0...𝑀)))
14		fzoss2 13693	. . . . . . . . . 10 ⊢ ((𝑀 + 1) ∈ (ℤ≥‘𝑀) → (0..^𝑀) ⊆ (0..^(𝑀 + 1)))
15	9, 14	syl 17	. . . . . . . . 9 ⊢ (𝑀 ∈ ℕ → (0..^𝑀) ⊆ (0..^(𝑀 + 1)))
16		ssralv 4005	. . . . . . . . 9 ⊢ ((0..^𝑀) ⊆ (0..^(𝑀 + 1)) → (∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) → ∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))))
17	15, 16	syl 17	. . . . . . . 8 ⊢ (𝑀 ∈ ℕ → (∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) → ∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))))
18	17	adantld 494	. . . . . . 7 ⊢ (𝑀 ∈ ℕ → ((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))) → ∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))))
19	18	imp 410	. . . . . 6 ⊢ ((𝑀 ∈ ℕ ∧ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))) → ∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))
20		fzossfz 13684	. . . . . . . . . . . . . . 15 ⊢ (0..^𝑀) ⊆ (0...𝑀)
21	20	a1i 11	. . . . . . . . . . . . . 14 ⊢ ((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) → (0..^𝑀) ⊆ (0...𝑀))
22	21	sselda 3936	. . . . . . . . . . . . 13 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → 𝑖 ∈ (0...𝑀))
23		fvres 6886	. . . . . . . . . . . . . 14 ⊢ (𝑖 ∈ (0...𝑀) → ((𝑃 ↾ (0...𝑀))‘𝑖) = (𝑃‘𝑖))
24	23	eqcomd 2768	. . . . . . . . . . . . 13 ⊢ (𝑖 ∈ (0...𝑀) → (𝑃‘𝑖) = ((𝑃 ↾ (0...𝑀))‘𝑖))
25	22, 24	syl 17	. . . . . . . . . . . 12 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → (𝑃‘𝑖) = ((𝑃 ↾ (0...𝑀))‘𝑖))
26		simpr 488	. . . . . . . . . . . . . . 15 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → 𝑖 ∈ (0..^𝑀))
27		elfzouz 13669	. . . . . . . . . . . . . . . . 17 ⊢ (𝑖 ∈ (0..^𝑀) → 𝑖 ∈ (ℤ≥‘0))
28	27	adantl 485	. . . . . . . . . . . . . . . 16 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → 𝑖 ∈ (ℤ≥‘0))
29		fzofzp1b 13771	. . . . . . . . . . . . . . . 16 ⊢ (𝑖 ∈ (ℤ≥‘0) → (𝑖 ∈ (0..^𝑀) ↔ (𝑖 + 1) ∈ (0...𝑀)))
30	28, 29	syl 17	. . . . . . . . . . . . . . 15 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → (𝑖 ∈ (0..^𝑀) ↔ (𝑖 + 1) ∈ (0...𝑀)))
31	26, 30	mpbid 234	. . . . . . . . . . . . . 14 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → (𝑖 + 1) ∈ (0...𝑀))
32		fvres 6886	. . . . . . . . . . . . . 14 ⊢ ((𝑖 + 1) ∈ (0...𝑀) → ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)) = (𝑃‘(𝑖 + 1)))
33	31, 32	syl 17	. . . . . . . . . . . . 13 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)) = (𝑃‘(𝑖 + 1)))
34	33	eqcomd 2768	. . . . . . . . . . . 12 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → (𝑃‘(𝑖 + 1)) = ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)))
35	25, 34	breq12d 5113	. . . . . . . . . . 11 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → ((𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) ↔ ((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1))))
36	35	biimpd 231	. . . . . . . . . 10 ⊢ (((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) ∧ 𝑖 ∈ (0..^𝑀)) → ((𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) → ((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1))))
37	36	ralimdva 3174	. . . . . . . . 9 ⊢ ((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ 𝑀 ∈ ℕ) → (∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) → ∀𝑖 ∈ (0..^𝑀)((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1))))
38	37	ex 416	. . . . . . . 8 ⊢ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) → (𝑀 ∈ ℕ → (∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) → ∀𝑖 ∈ (0..^𝑀)((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)))))
39	38	adantr 484	. . . . . . 7 ⊢ ((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))) → (𝑀 ∈ ℕ → (∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) → ∀𝑖 ∈ (0..^𝑀)((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)))))
40	39	impcom 411	. . . . . 6 ⊢ ((𝑀 ∈ ℕ ∧ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))) → (∀𝑖 ∈ (0..^𝑀)(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)) → ∀𝑖 ∈ (0..^𝑀)((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1))))
41	19, 40	mpd 15	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))) → ∀𝑖 ∈ (0..^𝑀)((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)))
42		iccpart 48022	. . . . . 6 ⊢ (𝑀 ∈ ℕ → ((𝑃 ↾ (0...𝑀)) ∈ (RePart‘𝑀) ↔ ((𝑃 ↾ (0...𝑀)) ∈ (ℝ* ↑m (0...𝑀)) ∧ ∀𝑖 ∈ (0..^𝑀)((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)))))
43	42	adantr 484	. . . . 5 ⊢ ((𝑀 ∈ ℕ ∧ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))) → ((𝑃 ↾ (0...𝑀)) ∈ (RePart‘𝑀) ↔ ((𝑃 ↾ (0...𝑀)) ∈ (ℝ* ↑m (0...𝑀)) ∧ ∀𝑖 ∈ (0..^𝑀)((𝑃 ↾ (0...𝑀))‘𝑖) < ((𝑃 ↾ (0...𝑀))‘(𝑖 + 1)))))
44	13, 41, 43	mpbir2and 723	. . . 4 ⊢ ((𝑀 ∈ ℕ ∧ (𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1)))) → (𝑃 ↾ (0...𝑀)) ∈ (RePart‘𝑀))
45	44	ex 416	. . 3 ⊢ (𝑀 ∈ ℕ → ((𝑃 ∈ (ℝ* ↑m (0...(𝑀 + 1))) ∧ ∀𝑖 ∈ (0..^(𝑀 + 1))(𝑃‘𝑖) < (𝑃‘(𝑖 + 1))) → (𝑃 ↾ (0...𝑀)) ∈ (RePart‘𝑀)))
46	3, 45	sylbid 242	. 2 ⊢ (𝑀 ∈ ℕ → (𝑃 ∈ (RePart‘(𝑀 + 1)) → (𝑃 ↾ (0...𝑀)) ∈ (RePart‘𝑀)))
47	46	imp 410	1 ⊢ ((𝑀 ∈ ℕ ∧ 𝑃 ∈ (RePart‘(𝑀 + 1))) → (𝑃 ↾ (0...𝑀)) ∈ (RePart‘𝑀))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 399   = wceq 1560   ∈ wcel 2142  ∀wral 3076   ⊆ wss 3904   class class class wbr 5100   ↾ cres 5649  ‘cfv 6521  (class class class)co 7396   ↑_m cmap 8808  0cc0 11073  1c1 11074   + caddc 11076  ℝ^*cxr 11215   < clt 11216  ℕcn 12210  ℤcz 12568  ℤ_≥cuz 12839  ...cfz 13512  ..^cfzo 13659  RePartciccp 48019

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1815  ax-4 1829  ax-5 1930  ax-6 1987  ax-7 2028  ax-8 2144  ax-9 2152  ax-10 2175  ax-11 2191  ax-12 2212  ax-ext 2734  ax-sep 5246  ax-nul 5256  ax-pow 5322  ax-pr 5390  ax-un 7718  ax-cnex 11129  ax-resscn 11130  ax-1cn 11131  ax-icn 11132  ax-addcl 11133  ax-addrcl 11134  ax-mulcl 11135  ax-mulrcl 11136  ax-mulcom 11137  ax-addass 11138  ax-mulass 11139  ax-distr 11140  ax-i2m1 11141  ax-1ne0 11142  ax-1rid 11143  ax-rnegex 11144  ax-rrecex 11145  ax-cnre 11146  ax-pre-lttri 11147  ax-pre-lttrn 11148  ax-pre-ltadd 11149  ax-pre-mulgt0 11150

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3or 1099  df-3an 1100  df-tru 1563  df-fal 1573  df-ex 1800  df-nf 1804  df-sb 2091  df-mo 2566  df-eu 2596  df-clab 2741  df-cleq 2754  df-clel 2837  df-nfc 2911  df-ne 2958  df-nel 3062  df-ral 3077  df-rex 3087  df-reu 3368  df-rab 3415  df-v 3456  df-sbc 3745  df-csb 3853  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-pss 3924  df-nul 4286  df-if 4481  df-pw 4557  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-iun 4951  df-br 5101  df-opab 5163  df-mpt 5182  df-tr 5208  df-id 5542  df-eprel 5547  df-po 5555  df-so 5556  df-fr 5600  df-we 5602  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-pred 6288  df-ord 6349  df-on 6350  df-lim 6351  df-suc 6352  df-iota 6477  df-fun 6523  df-fn 6524  df-f 6525  df-f1 6526  df-fo 6527  df-f1o 6528  df-fv 6529  df-riota 7353  df-ov 7399  df-oprab 7400  df-mpo 7401  df-om 7847  df-1st 7970  df-2nd 7971  df-frecs 8262  df-wrecs 8293  df-recs 8342  df-rdg 8381  df-er 8678  df-map 8810  df-en 8928  df-dom 8929  df-sdom 8930  df-pnf 11218  df-mnf 11219  df-xr 11220  df-ltxr 11221  df-le 11222  df-sub 11416  df-neg 11417  df-nn 12211  df-n0 12482  df-z 12569  df-uz 12840  df-fz 13513  df-fzo 13660  df-iccp 48020

This theorem is referenced by:  iccelpart  48039