I added
nab=var("nabla",latex_name=r'\mathcal{\nabla f}')∇f(x,y)↦(−sin(x),−2cos(y)) Le 29/08/2018 à 18:46, HG a écrit :
The last thing I do ( but I am not sure it's "legal" : f(x,y) = cos(x)-2*sin(y) gradient = derivative( f ) nab=var("nabla",latex_name=r'\mathcal{\nabla}') nabla=gradient;show(f);show(nab,nabla) --------------------- ∇(x,y)↦(−sin(x),−2cos(y)) Le lundi 20 août 2018 08:48:11 UTC+2, HG a écrit : hi, I would like to use nabla as div or grad operator, in sagemanifolds it's used as levita-civita, how could it be use as them if it's possible ? Regards Henri --You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com <mailto:sage-support+unsubscr...@googlegroups.com>. To post to this group, send email to sage-support@googlegroups.com <mailto:sage-support@googlegroups.com>.Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
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