Le vendredi 15 mars 2013 02:15:35 UTC+1, David Joyner a écrit : > > > Is this what you want? > http://www.sagemath.org/doc/reference/sage/combinat/matrices/latin.html > > > Not exactly : a call back_circulant(n) returns the circulant matrix associated to the list range(n). I need a more general function. Maple achieves this by passing an option to the Matrix constructor, for instance Matrix(3, shape=Circulant[[42, 20, 13]]) returns the circulant matrix with first line [42, 20, 13]. Circulant matrix is so "classic" that I'm surprised not to find it in Sage.
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