On Apr 9, 2008, at 12:24 AM, Robert Bradshaw wrote: >> >> Could this be a bit more general? There are other things one wants >> to do that are similar, such as matrix.real() and matrix.imag(), or >> matrix.abs() for real, imaginary, and absolute values of the entries >> respectively. It sounds like we want a map operator for a lot of >> datatypes. > > There is an apply_map function that will do this. I experimented with > making it automatic (i.e. if the method is not found, look up the > element's method) and it felt weird--interesting but I don't think > that's what we want to do. > > sage: M = matrix(3, [1+k^2 for k in range(9)]); M > [ 1 2 5] > [10 17 26] > [37 50 65] > > sage: M.valuation(5) > [0 0 1] > [1 0 0] > [0 2 1] > > sage: M.sqrt() # I'm sure this isn't what we want > [ 1 sqrt(2) sqrt(5)] > [ sqrt(10) sqrt(17) sqrt(26)] > [ sqrt(37) 5*sqrt(2) sqrt(65)] > > sage: M.ndigits() > [1 1 1] > [2 2 2] > [2 2 2] > > sage: M.next_prime() > [ 2 3 7] > [11 19 29] > [41 53 67] > > sage: M.multifactorial(7) > [ 1 1 1] > [ 10 170 5928] > [ 3676320 5925744000 31101226041600]
Ugh. I don't like any of them. Even valuation is wrong. david --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
