We show that any convex Jordan curve in a normed plane admits an inscribed Minkowskian square. In addition we prove that no two different Minkowskian rhombi with the same direction of one diagonal can be inscribed in the same strictly convex Jordan curve.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-cm120-2-5, author = {Horst Martini and Senlin Wu}, title = {Minkowskian rhombi and squares inscribed in convex Jordan curves}, journal = {Colloquium Mathematicae}, volume = {120}, year = {2010}, pages = {249-261}, zbl = {1213.52001}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm120-2-5} }
Horst Martini; Senlin Wu. Minkowskian rhombi and squares inscribed in convex Jordan curves. Colloquium Mathematicae, Tome 120 (2010) pp. 249-261. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm120-2-5/