The install-script() utility did install gap and maxima scripts invoking
sage with the relevant switches and arguments. However, it did not install
scripts for singular or mwrank (which used to be available the same way).
A cursory look at install_scripts source shows that have_program can find
Sage's maxima and gap, but not singular nor mwrank. The reason seems that
$SAGE_LOCAL/bin has both maxima and gap, but neither singular nor mwrank.
However, both can be invoked from the command line :
charpent@zen-book-flip:~$ sage --singular
SINGULAR / Development
A Computer Algebra System for Polynomial Computations / version
4.1.1
0<
by: W. Decker, G.-M. Greuel, G. Pfister, H. Schoenemann \ Feb 2018
FB Mathematik der Universitaet, D-67653 Kaiserslautern \
> quit;
Auf Wiedersehen.
charpent@zen-book-flip:~$ sage --mwrank
Program mwrank: uses 2-descent (via 2-isogeny if possible) to
determine the rank of an elliptic curve E over Q, and list a
set of points which generate E(Q) modulo 2E(Q).
and finally saturate to obtain generating points on the curve.
For more details see the mwrank documentation.
For details of algorithms see the author's book.
Please acknowledge use of this program in published work,
and send problems to john.crem...@gmail.com.
Version compiled on Apr 5 2020 at 08:01:18 by GCC 9.3.0
using NTL bigints but no multiprecision floating point
Using multiprecision floating point with 50 bits precision.
Enter curve:
charpent@zen-book-flip:~$
Is that an oversight or is there a good reason not to install the relevant
binaries-or-scripts in $SAGE_LOCAL/bin ? Or at least as
command-line-invocable scripts ?
Same question for other command-line-invocable optional binaries, such as
Macaulay2....
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