Dear David, Yes it is related.
Dear Mikhail, Let us check what is developed so far as a starting point. This looks like a good initial step. I have been travelling since last evening. Sorry for the relatively late reply. Best wishes, Furkan. 13 Haz 2020 Cmt 16:21 tarihinde David Joyner <wdjoy...@gmail.com> şunu yazdı: > Is the command > sympy.solvers.ode.infinitesimals > (in sympy, therefore in Sage) related to what you want? > https://docs.sympy.org/latest/modules/solvers/ode.html#infinitesimals > > > On Fri, Jun 12, 2020 at 8:07 PM Mikhail Malakhaltsev <mik...@gmail.com> > wrote: > >> Dear Furcan, >> >> The topic is very interesting, there are several implementations of >> "symmetry analysis of differential equations" in software, for example, see >> Gerd Baumann "Symmetry Analysis of Differential Equations with >> Mathematica", or the project jets.math.slu.cz (I did not know about the >> book by Hans Stephani, thank you). Of course, it would be interesting to do >> similar things in SAGE, and I could also contribute a bit to this project >> :) >> >> Best wishes, >> Mikhail >> >> El jueves, 11 de junio de 2020, 5:23:10 (UTC-5), Furkan Semih Dündar >> escribió: >>> >>> Dearl All, >>> >>> I recently bought the book that I studied in my PhD years. It is >>> "*Differential >>> Equations: their solution using symmetries*" by Hans Stephani. >>> https://www.amazon.com/Differential-Equations-Their-Solution-Symmetries/dp/0521355311/ref=sr_1_1?dchild=1&keywords=hans+stephani+differential+equation&qid=1591870417&sr=8-1 >>> >>> In the book, methods to solve nonlinear ODE's or PDE's are given if the >>> differential equation has an underlying Lie group symmetry. I remember >>> using the program "Reduce" in the course. It may be useful. >>> >>> My aim is to incorporate the methods given in the book to Sage Math. So >>> if you are interested maybe we can form a small group to contribute to Sage >>> in this respect. I believe the ability to solve complex differential >>> equations is quite important for a symbolic math software. Please let me >>> know if you are interested. >>> >>> Best regards, >>> >>> >>> -- >>> F. Semih Dündar >>> >>> -- >> 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 >> email to sage-devel+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sage-devel/d390c411-edba-4374-b1bd-99fd14d9a255o%40googlegroups.com >> <https://groups.google.com/d/msgid/sage-devel/d390c411-edba-4374-b1bd-99fd14d9a255o%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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 > email to sage-devel+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-devel/CAEQuuAU_2X5pG%3DAX5%3DtLscV7se%2Bmwn2MxuT77R_Vuijw%3DCwdUA%40mail.gmail.com > <https://groups.google.com/d/msgid/sage-devel/CAEQuuAU_2X5pG%3DAX5%3DtLscV7se%2Bmwn2MxuT77R_Vuijw%3DCwdUA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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 email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/CAODtkKpYYGifCK453ufViPEJuqTP0EpZ161viCsRJ0zk0Mvt0w%40mail.gmail.com.
