Le mardi 18 janvier 2022 à 02:37:20 UTC, Marc Culler on sage-release: > That worked like a charm! > > * frame #0: 0xffff83c0f9024900 > frame #1: 0x0000000153ff8b7c > _dop.cpython-39-darwin.so`PyFortranObject_New > + 40 > frame #2: 0x0000000153ff66fc _dop.cpython-39-darwin.so`PyInit__dop + > 1020 > > [...] > > If anyone knows what dop stands for, I am all ears. >
It seems "DOP" or "DOPRI" or "RKDP" stand for "Dormand & Prince" or "Runge-Kutta-Dormand-Prince" and refer to a method, or family of methods (of the Runge-Kutta family), devised by these authors for numerically solving ordinary differential equations. See: https://en.wikipedia.org/wiki/Dormand–Prince_method https://docs.scipy.org/doc/scipy/reference/generated/scipy.integrate.DOP853.html http://www.unige.ch/~hairer/prog/nonstiff/dop853.f In particular, the file "dop853.f", linked to above, states "DOP853" is "an explicit Runge-Kutta method of order 8(5,3) due to Dormand & Prince (with stepsize control and dense output)". These abbreviation seem common in the world of numerical methods for solving ordinary differential equations but so far that meaning of DOP is missing from the wikipedia disambiguation page https://en.wikipedia.org/wiki/DOP -- You received this message because you are subscribed to the Google Groups "sage-release" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-release+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-release/8ff24293-3a80-4d65-9275-46ed122a2950n%40googlegroups.com.
