Sharp Remez-type inequalities of various metrics for the best approximations by a constant
نویسندگان
چکیده
منابع مشابه
Sharp Jackson-type Inequalities for Approximations of Classes of Convolutions by Entire Functions of Exponential Type
In this paper, a new method is introduced for the proof of sharp Jacksontype inequalities for approximation of convolution classes of functions defined on the real line. These classes are approximated by linear operators with values in sets of entire functions of exponential type. In particular, a sharp Jackson-type inequality for the even-order derivatives of the conjugate function is proved. ...
متن کاملstudy of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
Norming Sets and Related Remez-type Inequalities
The classical Remez inequality ([33]) bounds the maximum of the absolute value of a real polynomial P of degree d on [−1, 1] through the maximum of its absolute value on any subset Z ⊂ [−1, 1] of positive Lebesgue measure. Extensions to several variables and to certain sets of Lebesgue measure zero, massive in a much weaker sense, are available (see, e.g., [14, 39, 8]). Still, given a subset Z ...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
Lower Bounds for Derivatives of Polynomials and Remez Type Inequalities
P. Turán [!Tu] proved that if all the zeros of a polyniomial p lie in the unit interval I def = [−1, 1], then ‖p‖L∞(I) ≥ √ deg(p)/6 ‖p‖L∞(I) . Our goal is to study the feasibility of limn→∞ ‖pn‖X/‖pn‖Y = ∞ for sequences of polynomials {pn}n∈N whose zeros satisfy certain conditions, and to obtain lower bounds for derivatives of (generalized) polynomials and Remez type inequalities for generalize...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Researches in Mathematics
سال: 2017
ISSN: 2664-5009,2664-4991
DOI: 10.15421/241703