iccpartdisj - Mathbox for Alexander van der Vekens

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Theorem iccpartdisj 46839

Description: The segments of a partitioned half-open interval of extended reals are a disjoint collection. (Contributed by AV, 19-Jul-2020.)

**Hypotheses**
Ref	Expression
iccpartiun.m	⊢ (𝜑 → 𝑀 ∈ ℕ)
iccpartiun.p	⊢ (𝜑 → 𝑃 ∈ (RePart‘𝑀))

**Assertion**
Ref	Expression
iccpartdisj	⊢ (𝜑 → Disj 𝑖 ∈ (0..^𝑀)((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))))

Distinct variable groups: 𝑖,𝑀 𝑃,𝑖 𝜑,𝑖

Proof of Theorem iccpartdisj Dummy variables 𝑗 𝑝 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nfv 1909	. . . . 5 ⊢ Ⅎ𝑖𝜑
2		nfreu1 3396	. . . . 5 ⊢ Ⅎ𝑖∃!𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1)))
3		simpl 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → 𝜑)
4		iccpartiun.m	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑀 ∈ ℕ)
5	4	adantr 479	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → 𝑀 ∈ ℕ)
6		iccpartiun.p	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑃 ∈ (RePart‘𝑀))
7	6	adantr 479	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → 𝑃 ∈ (RePart‘𝑀))
8		nnnn0 12507	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℕ → 𝑀 ∈ ℕ₀)
9		0elfz 13628	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℕ₀ → 0 ∈ (0...𝑀))
10	4, 8, 9	3syl 18	. . . . . . . . . . 11 ⊢ (𝜑 → 0 ∈ (0...𝑀))
11	10	adantr 479	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → 0 ∈ (0...𝑀))
12	5, 7, 11	iccpartxr 46821	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (𝑃‘0) ∈ ℝ^*)
13		nn0fz0 13629	. . . . . . . . . . . . 13 ⊢ (𝑀 ∈ ℕ₀ ↔ 𝑀 ∈ (0...𝑀))
14	13	biimpi 215	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ ℕ₀ → 𝑀 ∈ (0...𝑀))
15	4, 8, 14	3syl 18	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑀 ∈ (0...𝑀))
16	15	adantr 479	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → 𝑀 ∈ (0...𝑀))
17	5, 7, 16	iccpartxr 46821	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (𝑃‘𝑀) ∈ ℝ^*)
18	4, 6	iccpartgel 46831	. . . . . . . . . . 11 ⊢ (𝜑 → ∀𝑗 ∈ (0...𝑀)(𝑃‘0) ≤ (𝑃‘𝑗))
19		elfzofz 13678	. . . . . . . . . . . . . 14 ⊢ (𝑖 ∈ (0..^𝑀) → 𝑖 ∈ (0...𝑀))
20	19	adantl 480	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → 𝑖 ∈ (0...𝑀))
21		fveq2 6891	. . . . . . . . . . . . . . 15 ⊢ (𝑗 = 𝑖 → (𝑃‘𝑗) = (𝑃‘𝑖))
22	21	breq2d 5155	. . . . . . . . . . . . . 14 ⊢ (𝑗 = 𝑖 → ((𝑃‘0) ≤ (𝑃‘𝑗) ↔ (𝑃‘0) ≤ (𝑃‘𝑖)))
23	22	rspcv 3598	. . . . . . . . . . . . 13 ⊢ (𝑖 ∈ (0...𝑀) → (∀𝑗 ∈ (0...𝑀)(𝑃‘0) ≤ (𝑃‘𝑗) → (𝑃‘0) ≤ (𝑃‘𝑖)))
24	20, 23	syl 17	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (∀𝑗 ∈ (0...𝑀)(𝑃‘0) ≤ (𝑃‘𝑗) → (𝑃‘0) ≤ (𝑃‘𝑖)))
25	24	ex 411	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑖 ∈ (0..^𝑀) → (∀𝑗 ∈ (0...𝑀)(𝑃‘0) ≤ (𝑃‘𝑗) → (𝑃‘0) ≤ (𝑃‘𝑖))))
26	18, 25	mpid 44	. . . . . . . . . 10 ⊢ (𝜑 → (𝑖 ∈ (0..^𝑀) → (𝑃‘0) ≤ (𝑃‘𝑖)))
27	26	imp 405	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (𝑃‘0) ≤ (𝑃‘𝑖))
28	4, 6	iccpartleu 46830	. . . . . . . . . . 11 ⊢ (𝜑 → ∀𝑗 ∈ (0...𝑀)(𝑃‘𝑗) ≤ (𝑃‘𝑀))
29		fzofzp1 13759	. . . . . . . . . . . . . 14 ⊢ (𝑖 ∈ (0..^𝑀) → (𝑖 + 1) ∈ (0...𝑀))
30	29	adantl 480	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (𝑖 + 1) ∈ (0...𝑀))
31		fveq2 6891	. . . . . . . . . . . . . . 15 ⊢ (𝑗 = (𝑖 + 1) → (𝑃‘𝑗) = (𝑃‘(𝑖 + 1)))
32	31	breq1d 5153	. . . . . . . . . . . . . 14 ⊢ (𝑗 = (𝑖 + 1) → ((𝑃‘𝑗) ≤ (𝑃‘𝑀) ↔ (𝑃‘(𝑖 + 1)) ≤ (𝑃‘𝑀)))
33	32	rspcv 3598	. . . . . . . . . . . . 13 ⊢ ((𝑖 + 1) ∈ (0...𝑀) → (∀𝑗 ∈ (0...𝑀)(𝑃‘𝑗) ≤ (𝑃‘𝑀) → (𝑃‘(𝑖 + 1)) ≤ (𝑃‘𝑀)))
34	30, 33	syl 17	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (∀𝑗 ∈ (0...𝑀)(𝑃‘𝑗) ≤ (𝑃‘𝑀) → (𝑃‘(𝑖 + 1)) ≤ (𝑃‘𝑀)))
35	34	ex 411	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑖 ∈ (0..^𝑀) → (∀𝑗 ∈ (0...𝑀)(𝑃‘𝑗) ≤ (𝑃‘𝑀) → (𝑃‘(𝑖 + 1)) ≤ (𝑃‘𝑀))))
36	28, 35	mpid 44	. . . . . . . . . 10 ⊢ (𝜑 → (𝑖 ∈ (0..^𝑀) → (𝑃‘(𝑖 + 1)) ≤ (𝑃‘𝑀)))
37	36	imp 405	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (𝑃‘(𝑖 + 1)) ≤ (𝑃‘𝑀))
38		icossico 13424	. . . . . . . . 9 ⊢ ((((𝑃‘0) ∈ ℝ^* ∧ (𝑃‘𝑀) ∈ ℝ^*) ∧ ((𝑃‘0) ≤ (𝑃‘𝑖) ∧ (𝑃‘(𝑖 + 1)) ≤ (𝑃‘𝑀))) → ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) ⊆ ((𝑃‘0)[,)(𝑃‘𝑀)))
39	12, 17, 27, 37, 38	syl22anc 837	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) ⊆ ((𝑃‘0)[,)(𝑃‘𝑀)))
40	39	sseld 3971	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) → 𝑝 ∈ ((𝑃‘0)[,)(𝑃‘𝑀))))
41	4, 6	icceuelpart 46838	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑝 ∈ ((𝑃‘0)[,)(𝑃‘𝑀))) → ∃!𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))))
42	3, 40, 41	syl6an 682	. . . . . 6 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑀)) → (𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) → ∃!𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1)))))
43	42	ex 411	. . . . 5 ⊢ (𝜑 → (𝑖 ∈ (0..^𝑀) → (𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) → ∃!𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))))))
44	1, 2, 43	rexlimd 3254	. . . 4 ⊢ (𝜑 → (∃𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) → ∃!𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1)))))
45		rmo5 3384	. . . 4 ⊢ (∃*𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) ↔ (∃𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) → ∃!𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1)))))
46	44, 45	sylibr 233	. . 3 ⊢ (𝜑 → ∃*𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))))
47	46	alrimiv 1922	. 2 ⊢ (𝜑 → ∀𝑝∃*𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))))
48		df-disj 5109	. 2 ⊢ (Disj 𝑖 ∈ (0..^𝑀)((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))) ↔ ∀𝑝∃*𝑖 ∈ (0..^𝑀)𝑝 ∈ ((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))))
49	47, 48	sylibr 233	1 ⊢ (𝜑 → Disj 𝑖 ∈ (0..^𝑀)((𝑃‘𝑖)[,)(𝑃‘(𝑖 + 1))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 ∀wal 1531 = wceq 1533 ∈ wcel 2098 ∀wral 3051 ∃wrex 3060 ∃!wreu 3362 ∃*wrmo 3363 ⊆ wss 3940 Disj wdisj 5108 class class class wbr 5143 ‘cfv 6542 (class class class)co 7415 0cc0 11136 1c1 11137 + caddc 11139 ℝ^*cxr 11275 ≤ cle 11277 ℕcn 12240 ℕ₀cn0 12500 [,)cico 13356 ...cfz 13514 ..^cfzo 13657 RePartciccp 46815

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-sep 5294 ax-nul 5301 ax-pow 5359 ax-pr 5423 ax-un 7737 ax-cnex 11192 ax-resscn 11193 ax-1cn 11194 ax-icn 11195 ax-addcl 11196 ax-addrcl 11197 ax-mulcl 11198 ax-mulrcl 11199 ax-mulcom 11200 ax-addass 11201 ax-mulass 11202 ax-distr 11203 ax-i2m1 11204 ax-1ne0 11205 ax-1rid 11206 ax-rnegex 11207 ax-rrecex 11208 ax-cnre 11209 ax-pre-lttri 11210 ax-pre-lttrn 11211 ax-pre-ltadd 11212 ax-pre-mulgt0 11213

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3770 df-csb 3886 df-dif 3943 df-un 3945 df-in 3947 df-ss 3957 df-pss 3960 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-op 4631 df-uni 4904 df-iun 4993 df-disj 5109 df-br 5144 df-opab 5206 df-mpt 5227 df-tr 5261 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7371 df-ov 7418 df-oprab 7419 df-mpo 7420 df-om 7868 df-1st 7989 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8388 df-rdg 8427 df-er 8721 df-map 8843 df-en 8961 df-dom 8962 df-sdom 8963 df-pnf 11278 df-mnf 11279 df-xr 11280 df-ltxr 11281 df-le 11282 df-sub 11474 df-neg 11475 df-nn 12241 df-2 12303 df-n0 12501 df-z 12587 df-uz 12851 df-ico 13360 df-fz 13515 df-fzo 13658 df-iccp 46816

This theorem is referenced by: (None)

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