Chmutov, Sergei V. (ed.); Karev, Maksim V. (ed.); Kauffman, Louis H. (ed.); Przytycki, Jozef H. (ed.) Editorial. (English) Zbl 1354.00087 J. Knot Theory Ramifications 25, No. 12, Article ID 1602004, 3 p. (2016). From the text: This issue is devoted to the memory of Sergei Duzhin, a well-known knot theorist who unexpectedly passed away on 1 February 2015. The contributions to this issue reflect the width of Sergei’s interests and his passion for mathematics. They are written by participants of the conference “Knots in Washington XL; in memory of Sergei Duzhin (1956–2015)”, Sergei’s friends, colleagues, and collaborates. MSC: 00B25 Proceedings of conferences of miscellaneous specific interest 00B30 Festschriften 57-06 Proceedings, conferences, collections, etc. pertaining to manifolds and cell complexes PDFBibTeX XMLCite \textit{S. V. Chmutov} (ed.) et al., J. Knot Theory Ramifications 25, No. 12, Article ID 1602004, 3 p. (2016; Zbl 1354.00087) Full Text: DOI