On mappings preserving equilateral triangles
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Publication:1882458
zbMath1053.51012MaRDI QIDQ1882458
Tomasz Szostok, Justyna Sikorska
Publication date: 1 October 2004
Published in: Journal of Geometry (Search for Journal in Brave)
Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) Functional equations for real functions (39B22) Elementary problems in Euclidean geometries (51M04)
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