Petitjean, Michel Chirality in metric spaces. (English) Zbl 1274.58004 Symmetry Cult. Sci. 21, No. 1-3, 27-36 (2010). MSC: 58D19 51M04 20B25 PDFBibTeX XMLCite \textit{M. Petitjean}, Symmetry Cult. Sci. 21, No. 1--3, 27--36 (2010; Zbl 1274.58004)
Petitjean, Michel A definition of symmetry. (English) Zbl 1274.58003 Symmetry Cult. Sci. 18, No. 2-3, 99-119 (2007). MSC: 58D19 52B15 20B25 PDFBibTeX XMLCite \textit{M. Petitjean}, Symmetry Cult. Sci. 18, No. 2--3, 99--119 (2007; Zbl 1274.58003)