2018
DOI: 10.1007/s00010-018-0556-5
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On a problem of Janusz Matkowski and Jacek Wesołowski

Abstract: We study the problem of the existence of increasing and continuous solutions ϕ : [0, 1] → [0, 1] such that ϕ(0) = 0 and ϕ(1) = 1 of the functional equationwhere N ∈ N and f0, . . . , fN : [0, 1] → [0, 1] are strictly increasing contractions satisfying the following condition 0 = f0(0) < f0(1) = f1(0) < · · · < fN−1(1) = fN (0) < fN (1) = 1. In particular, we give an answer to the problem posed in [9] by Janusz Matkowski concerning a very special case of that equation.Mathematics Subject Classification (2010). … Show more

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Cited by 6 publications
(13 citation statements)
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“…, f −1 N (A) have Lebesgue measure zero for every set A ⊂ [0, 1] of Lebesgue measure zero 1 ), then the class C is determined by two of its subclasses C a and C s of all absolutely continuous and all singular functions, respectively. Repeating directly the proof of Remark 2.2 from [11] with the use of Lemma 2.2 we get the following result. It is clear that 0 is the unique fixed point of f 0 and 1 is the unique fixed point of f N , i.e.…”
Section: Preliminariesmentioning
confidence: 75%
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“…, f −1 N (A) have Lebesgue measure zero for every set A ⊂ [0, 1] of Lebesgue measure zero 1 ), then the class C is determined by two of its subclasses C a and C s of all absolutely continuous and all singular functions, respectively. Repeating directly the proof of Remark 2.2 from [11] with the use of Lemma 2.2 we get the following result. It is clear that 0 is the unique fixed point of f 0 and 1 is the unique fixed point of f N , i.e.…”
Section: Preliminariesmentioning
confidence: 75%
“…Repeating the proof of Theorem 3.3 from [11] we get the following result. We finish this section by giving a precise formula for ϕ.…”
Section: Existence Of Solutionsmentioning
confidence: 79%
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“…[9,7,1]). Studying a functional equation connected with the problem posed in [6,8], we come to the following question. Is the attractor of this IFS necessary of Lebesgue measure zero?…”
Section: Introductionmentioning
confidence: 99%