On Wed, Jul 14, 2010 at 3:04 PM, Johannes <dajo.m...@web.de> wrote: > scalar(v,w) = v * m * w
This is not what you want to do -- http://sagemath.org/doc/tutorial/tour_functions.html explains what is going on here. > otherwise, if i do it this way, directly on the console it works: > v1 = vector([1,1,1]) > v2 = vector([1,0,0]) > > v1 * m * v2.transpose() > > how can i force the type in my scalarfunction to be an matrix or even a > vector? You can't really force types in Python functions. If you want something like above, you can do sage: def scalar(v, w): ....: return v1 * m * v2.transpose() ....: > by the way, is there a scalarfunction defined somewhere? a > matrixmultiplication for this seems to be a little bit much overhead for me. This gives you the sum of the products of the corresponding entries: sage: v1 = vector([1,1,1]) sage: v2 = vector([1,0,0]) sage: v1*v2 1 --Mike -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
