 permute the coordinate axes without changing their orientation; this action obviously preserves the n-cube [—1, 1]”. Thus ordinary matroids can be also understood as symplectic matroids, the latter becoming the most natural  Coxeter Matroids - Pàgina viiiper Alexandre V. Borovik, Izrail M. Gelfand, Neil White - 2003 - 266 pàginesPrevisualització limitada - Sobre aquest llibre
 | C. D. Wensley - 2003 - 382 pàgines
...Furthermore, Sym n is naturally embedded in the group of symmetries of the n-cube because we can make Sym n permute the coordinate axes without changing their...symplectic matroids, the latter becoming the most natural generalisations of the former. However, the scope of the paper does not allow us to discuss in much... | |
 | Harold Scott Macdonald Coxeter, Chandler Davis, Erich W. Ellers - 344 pàgines
...Furthermore, Sym n is naturally embedded in the group of symmetries of the n-cube, because we can make Sym n permute the coordinate axes without changing their...orientation; this action obviously preserves the n-cube [—1,1]". Thus ordinary matroids can be also understood as symplectic (and, moreover, Lagrangian)... | |
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