Any cyclic quadrilateral can be inscribed in any closed convex smooth curve Akopyan, Arseniy ; https://orcid.org/0000-0002-2548-617X Avvakumov, Sergey ; https://orcid.org/0000-0002-7840-5062 ddc:510 We prove that any cyclic quadrilateral can be inscribed in any closed convex C1-curve. The smoothness condition is not required if the quadrilateral is a rectangle. Cambridge University Press 2018 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_2df8fbb1 https://research-explorer.ista.ac.at/record/6355 https://research-explorer.ista.ac.at/download/6355/6356 Akopyan A, Avvakumov S. Any cyclic quadrilateral can be inscribed in any closed convex smooth curve. <i>Forum of Mathematics, Sigma</i>. 2018;6. doi:<a href="https://doi.org/10.1017/fms.2018.7">10.1017/fms.2018.7</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1017/fms.2018.7 info:eu-repo/semantics/altIdentifier/issn/2050-5094 info:eu-repo/semantics/altIdentifier/wos/000433915500001 info:eu-repo/semantics/altIdentifier/arxiv/1712.10205 info:eu-repo/semantics/openAccess