[sage-devel] Re: inconsistency in computation of differential of a map between manifolds

I am sorry, but this is a stupid mistake. The function defined via set_inverse() is not the inverse function since the first entry of atan2 is by definition the y-coordinate. If one swaps u and v in atan2 then everything is fine. -- You received this message because you are subscribed to the G

[sage-devel] inconsistency in computation of differential of a map between manifolds

Hello, In the following code I define a differentiable map between two manifolds, then restrict it to a subset and then compute the matrix of its differential at a point in the subset (see also the attached jpynb file). I have noticed that when I execute this code several times by inserting the

Re: [sage-devel] Error copying files for gfortan-7.2.0

The build was successful. In earlier attempts I had not run make distclean. This time I used make distclean ./configure FC=gfortran-7 make and the build went through. It seems that using make distclean has helped to do the job. Maybe it has helped to remove some files from earlier unsuccessful a

Re: [sage-devel] Error copying files for gfortan-7.2.0

In the meantime I have upgraded my operating system to the more recent OpenSuse Leap 15.0. I am having again the same problem as I have described above. With "./configure FC=gfortran-7" and then "make" I get the same error as above. I have attached config.log and I would still appreciate your hel

Re: [sage-devel] Error copying files for gfortan-7.2.0

The output of ./configure FC=gfortran-8 says among other things checking SPKGs to install... gcc-7.2.0 not installed (configure check) gfortran-7.2.0 I have attached the full output in a file. -- You received this message because you are subscribed to the Google Groups "sage-devel" g

Re: [sage-devel] Error copying files for gfortan-7.2.0

I have installed gcc 8 and gfortran-8 and I have specified gfortran-8 to the configure file. The problem is still there. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an ema

[sage-devel] Error copying files for gfortan-7.2.0

Hello, I am trying to build Sage 8.6 under OpenSuse Leap 42.3 and I get the following error message: [gfortran-7.2.0] Copying package files from temporary location /home/andreas/sage/sage-8.6/local/var/tmp/sage/build/gfortran-7.2.0/inst to /home/andreas/sage/sage-8.6/local [gfortran-7.2.0] cp: