2019
DOI: 10.30970/ms.52.2.138-143
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Properties of analytic solutions of a differential equation

Abstract: For an analytic in the unit disk {z : |z| < 1} solution of the differential equation z(z − 1)w ′′ + β 1 zw ′ + γ 2 w = 0 the close-to-convexity, possible growth and the l-index boundedness are investigated.

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Cited by 23 publications
(19 citation statements)
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“…If we choose R = 1/5 and η = 1/2, then from Proposition 4 we get that by the conditions of Theorem 4 the function (11) with the coefficients satisfying ( 12) is of bounded l-index N(F, l) ≤ 1 with l(|z|) ≡ 20.…”
Section: Additionmentioning
confidence: 95%
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“…If we choose R = 1/5 and η = 1/2, then from Proposition 4 we get that by the conditions of Theorem 4 the function (11) with the coefficients satisfying ( 12) is of bounded l-index N(F, l) ≤ 1 with l(|z|) ≡ 20.…”
Section: Additionmentioning
confidence: 95%
“…Here we investigate the l-index boundedness of the entire function (10) and (11) with the coefficients satisfying ( 9) and ( 12) respectively.…”
Section: Additionmentioning
confidence: 99%
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“…A concept of bounded index for entire function ( [14]) draws attention of many mathematician (see a full bibliography in [7,17,18,11,8]) to investigations of the corresponding function class and possible applications of this concept. It is interesting with its connections to the value distribution theory and analytic theory of differential equation ( [11,18,4]). For example, every entire function has bounded value distribution if and only if its derivative has bounded index ( [13]).…”
mentioning
confidence: 99%