Researches in Mathematics

Kofanov, V.A., Oles Honchar Dnipropetrovsk National University, Ukraine

• Vol 23 (2015) - Articles
  Sharp inequalities of Kolmogorov type for non-periodic functions on the real domain
  Abstract  PDF (Українська)
• Vol 22 (2014) - Articles
  On the extension of differentiable functions from their monotonicity interval and inequalities of Kolmogorov type
  Abstract  PDF (Русский)
• Vol 21 (2013) - Articles
  On analogue of one problem of Erdös for non-periodic splines on the real domain
  Abstract  PDF (Русский)
• Vol 20 (2012) - Articles
  Inequalities for norms of derivatives of non-periodic functions with non-symmetric constraints on higher derivatives
  Abstract  PDF (Русский)
• Vol 24 (2016) - Articles
  Equivalence theorem for additive inequalities of Kolmogorov type
  Abstract  PDF (Українська)
• Vol 24 (2016) - Articles
  On sharp Remez-type inequalities of various metrics for periodic functions
  Abstract  PDF (Русский)
• Vol 25 (2017) - Articles
  Sharp Remez-type inequalities of various metrics for the best approximations by a constant
  Abstract  PDF (Русский)
• Vol 25 (2017) - Articles
  Solution of Bojanov-Naidenov problem with constraints for the norm $$$\|x\|_{p,\delta} = \sup \bigl\{ \| x \|_{L_p[a;b]} \colon a,b\in \mathbb{R}, b-a\leqslant \delta \bigr\}$$$
  Abstract  PDF (Русский)
• Vol 19 (2011) - Articles
  Exact upper bounds of norms of polynomials, splines, and their derivatives on arbitrary interval
  Abstract  PDF (Русский)
• Vol 18 (2010) - Articles
  On some inequalities in various metrics for differentiable functions on real line
  Abstract  PDF (Русский)
• Vol 17 (2009) - Articles
  Estimate of derivatives of functions on the real line in Weil spaces
  Abstract  PDF (Русский)
• Vol 16 (2008) - Articles
  Generalization of A.A. Ligun's inequality to $$$L_q$$$, $$$q \in [0, 1)$$$ spaces
  Abstract  PDF (Русский)

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ISSN (Online): 2664-5009

ISSN (Print): 2664-4991