Adjacency preserving mappings of 2 × 2 Hermitian matrices

• Autores: Wen-Ling Huang
• Localización: Aequationes mathematicae, ISSN 0001-9054, Vol. 75, Nº. 1-2, 2008, págs. 51-64
• Idioma: inglés
• DOI: 10.1007/s00010-007-2879-5
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• Resumen

  • We determine all mappings f from the space of 2 × 2 Hermitian matrices which take pairs of adjacent matrices to pairs of adjacent matrices and such that the image of f contains two matrices which are not adjacent.