Pichugov, Sergey A.2020-01-232020-01-232019Pichugov S. A. Concave Shells of Continuity Modules. Ukrainian Mathematical Journal. 2019. 71(5), P. 819–824. DOI: 10.1007/s11253-019-01678-9. (Ukrainian Original Vol. 71, No. 5, May, 2019).http://eadnurt.diit.edu.ua/jspui/handle/123456789/11775https://link.springer.com/article/10.1007/s11253-019-01678-9https://link.springer.com/content/pdf/10.1007%2Fs11253-019-01678-9.pdfS. Pichugov: ORCID 0000-0002-4263-4429EN: We prove the inequality ω¯(t)≤infs>0(ω(s2)+ω(s)st), where ω(t) is a function of the modulus-of-continuity type and ω¯(t) is its smallest concave majorant. The consequences obtained for Jackson’s inequalities in C2πare presented.enconcave shellsmodule of continuityувігнуті оболонкимодулі безперервностіКПМArticle