A little dual-purpose post: today I tried out Raul's pull-request of 24-01-2021 (https://github.com/jsoftware/math_calculus/pull/5) for simplifying expressions like 1&o. deriv 4 (which seems like a great idea even if it goes slightly above my hat).
However, I couldn't give it a proper test-drive in J904, because it segfaults my J when used 1&o. deriv n with n >: 3. JVERSION Engine: j904/j64avx/linux Beta-e: commercial/2022-07-16T19:22:33 Library: 9.04.03 Platform: Linux 64 Installer: J904 install InstallPath: /home/jpjacobs/j904 Contact: www.jsoftware.com It works in J903. Best regards, Jan-Pieter ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
