[GiNaC-list] How to differentiate from a Tensor?

[Richard B. Kreckel]

On 07/14/2017 11:18 AM, Vladimir V. Kisil wrote:
>     To maintainer: I have run into similar situation working with
>   differential operators. Shall we add "generic" functions to GiNaC with
>   1, 2, 3, 4 variables?  

Isn't that there already?
<https://www.ginac.de/ginac.git/?p=ginac.git;a=blob;f=ginac/function.cppy;h=a7e3649c7c195e93ae5886c66202ad9fdc1bbd6c;hb=HEAD#l744>

Cheers
    -richy.
-- 
Richard B. Kreckel
<https://in.terlu.de/~kreckel/>