Wikipedia seemed to be OK the last time I looked at it. It even split things out based on the two Jabobian conventions.
Aaron Meurer On Sat, May 3, 2014 at 5:06 PM, Tim Lahey <[email protected]> wrote: > I commented on that issue. That result is actually correct. > > The problem I have with the matrix cookbook is that it's just a list of > results, with no explanation on how each are derived. I've never found a > good reference for this in general. If someone knows of one, I'd appreciate > it. > > I think the latest version of the cookbook is slightly newer because > equation 61 doesn't match with the specific issue anymore. > > Cheers, > > Tim. > > > On 3 May 2014, at 14:47, Aaron Meurer wrote: > >> I think it's all explained in the matrix cookbook. See >> https://github.com/sympy/sympy/issues/5858. The question I have >> regarding the cookbook is, what is the minimum set of rules that need >> to be implemented from which the rest can be derived? >> >> Aaron Meurer >> >> On Mon, Apr 28, 2014 at 11:46 PM, Tim Lahey <[email protected]> wrote: >>> >>> I know how to handle x.T*A and A*x, but I'm not sure how to handle the >>> derivative if it appears in the middle of an term. It probably can be >>> handled, but I think that case would get a bit messy. >>> >>> Cheers, >>> >>> Tim. >>> >>> >>> On 29 Apr 2014, at 0:01, Matthew Rocklin wrote: >>> >>>> I'd love to have someone implement matrix derivative. This shouldn't be >>>> hard for someone who understands them well. >>>> >>>> >>>> On Mon, Apr 28, 2014 at 7:37 PM, Aaron Meurer <[email protected]> >>>> wrote: >>>> >>>>> These little issues with the transpose are the reason this isn't >>>>> implemented yet. >>>>> >>>>> Aaron Meurer >>>>> >>>>> On Mon, Apr 28, 2014 at 2:18 PM, Tim Lahey <[email protected]> wrote: >>>>>> >>>>>> >>>>>> It's only 2*A*x is A is symmetric (A.T = A). Otherwise it's (A.T + A). >>>>> >>>>> >>>>> That said, I don't think Matrix Expressions support derivatives at the >>>>> moment. >>>>>> >>>>>> >>>>>> >>>>>> Cheers, >>>>>> >>>>>> Tim. >>>>>> >>>>>> On 2014-04-28, at 1:27 PM, Gustavo <[email protected]> wrote: >>>>>> >>>>>>> Can I have matrices and vectors A and x with compatible but >>>>>>> unspecified >>>>> >>>>> >>>>> dimensions. And get diff(x.T * A * x , x) return 2*A*x ? >>>>>>> >>>>>>> >>>>>>> >>>>>>> Thanks, >>>>>>> Gustavo >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>> >>>>> >>>>> Groups "sympy" group. >>>>>> >>>>>> >>>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> >>>>> >>>>> an email to [email protected]. >>>>>> >>>>>> >>>>>> To post to this group, send email to [email protected]. >>>>>> Visit this group at http://groups.google.com/group/sympy. >>>>>> To view this discussion on the web visit >>>>> >>>>> >>>>> >>>>> >>>>> https://groups.google.com/d/msgid/sympy/340D188D-2402-47E1-829B-1E42297C89BD%40gmail.com >>>>> . >>>>>> >>>>>> >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups >>>>> "sympy" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an >>>>> email to [email protected]. >>>>> To post to this group, send email to [email protected]. >>>>> Visit this group at http://groups.google.com/group/sympy. >>>>> To view this discussion on the web visit >>>>> >>>>> >>>>> https://groups.google.com/d/msgid/sympy/CAKgW%3D6L4S-R2fdWrgo%2ByUO9QJKgpaj7icrpRgw08%3DjXTGXM8zQ%40mail.gmail.com >>>>> . >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups >>>> "sympy" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an >>>> email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at http://groups.google.com/group/sympy. >>>> To view this discussion on the web visit >>>> >>>> https://groups.google.com/d/msgid/sympy/CAJ8oX-Hfp90LqkHcdW5TzcrTqxvV4yCMj5ZOCkN64JKGSps1Kg%40mail.gmail.com. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sympy" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/sympy. >>> To view this discussion on the web visit >>> >>> https://groups.google.com/d/msgid/sympy/56371E44-E58D-49BA-AFEA-B2782D64E596%40gmail.com. >>> >>> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/sympy. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/CAKgW%3D6%2BbpuP1Km2j5sSY5NkUSuJrg3Yjz87Cp_XZ-9%2BxirSatA%40mail.gmail.com. >> >> For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/E3B791F1-F116-4C61-9D14-A05B8FE3FF24%40gmail.com. > > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sympy" group. 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