Results 251 to 260 of about 8,645,321 (278)
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Graphic Behavior of Positive Linear Operators
SIAM Journal on Applied Mathematics, 1971The case g(z) 1_ yields the classical operators of Otto Szasz [5]. The operators Pn were introduced by Jakimovski and Leviatan [1], who proved certain approximation properties of Pn(f; x) for real x. The author [6] investigated approximation properties of Pn(f; z) for complex z, as well as variation-diminishing properties of the operators and ...
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Certain positive linear operators
Mathematical Notes of the Academy of Sciences of the USSR, 1978Properties (including the approximating ones) are investigated of positive linear operators Ln(f; x) for which the relation $$L_n \left( {\left( {t - x} \right)f\left( t \right); x} \right) = \frac{{\varphi \left( x \right)}}{n}L'_n \left( {f\left( t \right); x} \right)$$
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On positive linear interpolation operators
Analysis Mathematica, 1975В этой работе мы даем о бобщение понятия нор мальной системы точек, введен ного Фейером [3]. Наше определ ение включает и случа й бесконечного интерв ала (0, ∞).
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A class of linear positive operators
Mathematical Notes of the Academy of Sciences of the USSR, 1988The author introduces and investigates two new classes of positive, linear operators that are similar (with respect to their spectral properties) to classes of quasi-sign-regular and quasi-totally-positive operators.
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On the Approximation by Linear Positive Operators
1970This paper is concerned with some properties of linear positive operators which are in analogy with the well-known Bernstein operator. Let ℑ j (I j ), j = 1,2, denote two linear spaces of real functions defined on the sets I j , j = 1,2, of points of the real axis. Let L n :ℑ 1 (I 1 ) →ℑ 2 (I 2 ), n = 1,2,..., be a sequence of linear positive operators
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Degeneracy of positive linear operators
1998A survey of results, obtained by the authors in the topic of degeneracy of positive linear operators, is given. It is shown that degeneracy is not only a privilege of Bernstein operators. Another type of generalization deals with multidimensional Bernstein polynomials over simplices.
KOCIC L, DELLA VECCHIA, Biancamaria
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Asymptotic formulae for positive linear operators.
Asymptotic formulae for sequences of approximating positive linear operators play an important role in the investigation of the corresponding saturation classes. As a consequence of the pioneering work of the first author it has been shown that asymptotic formulae are useful also in studying the representation of some semigroups of operators in terms ...ALTOMARE, Francesco, AMIAR R.
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Evolving Standards of Care and New Challenges in the Management of HER2-Positive Breast Cancer
Ca-A Cancer Journal for Clinicians, 2020Ciara C O'Sullivan +2 more
exaly
On the position of the space of representable operators in the space of linear operators
1997The author studies complementability of the space \(R(L^1 (\lambda),Y)\) of representable operators in the space of all bounded operators \(L(L^1 (\lambda),Y)\). It is given a number of examples when \(R(L^1 (\lambda),Y)\) is complemented in \(L(L^1 (\lambda),Y)\), extending the known case \(Y=L^1 (\mu)\). For instance, when \(Y\) is a predual of a \(W^
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