Research output: Contribution to journal › Article › peer-review
On some inequalities for the integrated modulus of continuity. / Vinogradov, O. L.
In: Vestnik St. Petersburg University: Mathematics, No. 12, 12.1996, p. 3-8.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - On some inequalities for the integrated modulus of continuity
AU - Vinogradov, O. L.
PY - 1996/12
Y1 - 1996/12
N2 - Two inequalities for the integrated modulus of continuity have been investigated for periodic continuous real-valued functions f with seminorms P. Let En(f) is the best approximation of n order of the function f. It has been proved that the inequality En(f)≤K∫0Π/(n+1)ω1(f′, t)dt is correct with the constant K=0.2961887, where ω1 is the continuity modulus of the first order for the function f with the step t relatively the seminorm P. Estimation of the periodic function seminorm by the second integrated modulus of continuity has been established with the smaller constant.
AB - Two inequalities for the integrated modulus of continuity have been investigated for periodic continuous real-valued functions f with seminorms P. Let En(f) is the best approximation of n order of the function f. It has been proved that the inequality En(f)≤K∫0Π/(n+1)ω1(f′, t)dt is correct with the constant K=0.2961887, where ω1 is the continuity modulus of the first order for the function f with the step t relatively the seminorm P. Estimation of the periodic function seminorm by the second integrated modulus of continuity has been established with the smaller constant.
UR - http://www.scopus.com/inward/record.url?scp=0030313784&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0030313784
SP - 3
EP - 8
JO - Vestnik St. Petersburg University: Mathematics
JF - Vestnik St. Petersburg University: Mathematics
SN - 1063-4541
IS - 12
ER -
ID: 101357495