On 2014-12-30, Peter Bruin <pjbr...@gmail.com> wrote: > ------=_Part_23_512688967.1419940866648 > Content-Type: multipart/alternative; > boundary="----=_Part_24_1059076605.1419940866648" > > ------=_Part_24_1059076605.1419940866648 > Content-Type: text/plain; charset=UTF-8 > > Just to clarify, typing GF(p, n) would not insert the name 'z' + str(n) > into the global namespace, it would just mean that elements are printed Ah, OK. Sorry, I should not post here after just one cup of coffee in the morning :-) > using this variable name. One would still have to do something like > > sage: F, z5 = GF(3, 5).objgen() > > to be able to use z5 on the command line.
Anyhow, the above looks ugly. How about sage: F.<z5> = GF(3, 5) and the following should also lead to the same thing: sage: F.<z5> = GF(3^5) Dima > > Peter > > > Op dinsdag 30 december 2014 12:35:30 UTC+1 schreef Dima Pasechnik: >> >> On 2014-12-30, Nathann Cohen <nathan...@gmail.com <javascript:>> wrote: >> > I wondered about this syntax. You can build a finite field from a >> > prime number with GF(p), but if what you have is a prime power you >> > should write GF(q,'x') instead. >> > >> > I very often need to create a lot of finite fields, but I could not >> > care less about this 'x' and so I type this even though I do not need >> > it. Would it make sense to you if we made this argument optional ? It >> > would be 'x' by default, or anything else that you would prefer. >> >> I don't see how this would play out nicely if you, say, define >> GF(27) and then define GF(9). >> Would the latter definition invalidate the former? >> >> In GAP this is solved by having a special indexed variable Z(p^k), for >> p a prime and k a natural number. Then after defining GF(27) and >> then defining GF(9) >> you can still refer to the elements of the former as a*Z(27)^i, >> for a and i integers. >> >> If something similar can be done in Sage, OK. >> Otherwise, -1. >> >> Dima >> >> > -- 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 post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
