[sage-devel] Re: Group of units in Z_n

2014-11-11 Thread Peter Bruin
Hello, After more than 5 years, there is now a ticket implementing a unit_group() method for IntegerModRing: http://trac.sagemath.org/ticket/17317 (needs review). Peter Op zaterdag 19 september 2009 05:14:57 UTC+2 schreef Rob Beezer: > > Sage-Devel, > > I've got it in my head to implement th

[sage-devel] Re: Group of units in Z_n

2009-09-21 Thread kcrisman
On Sep 21, 11:50 am, Rob Beezer wrote: > Hi Karl-Dieter, > > Well, I guess I *am* doing this as I put together something very quick > and sloppy last night, which has helped formulate my ideas for a > better version (this approach was due to some good advice from > William).  Let me know if you

[sage-devel] Re: Group of units in Z_n

2009-09-21 Thread Rob Beezer
Hi Karl-Dieter, Well, I guess I *am* doing this as I put together something very quick and sloppy last night, which has helped formulate my ideas for a better version (this approach was due to some good advice from William). Let me know if you need something messy and incomplete, but serviceable

[sage-devel] Re: Group of units in Z_n

2009-09-21 Thread kcrisman
Rob, Please do this! I am always having to do some hack in my number theory class for this, and it is very annoying (as you have discovered) not to have this. It is somewhere very far down my to-do list for Sage. Actually, I'm surprised there isn't some hidden structure where it lurks, as you

[sage-devel] Re: Group of units in Z_n

2009-09-19 Thread Rob Beezer
Francis, On Sep 19, 2:12 am, fwc wrote: > I have a draft of an implementation of the group of units for a finite > field, which overlaps, of course, with the group in question.  I > modelled it on John Cremona's unit group code for number fields (sage/ > rings/number_field/unit_group.py). Thank

[sage-devel] Re: Group of units in Z_n

2009-09-19 Thread fwc
On Sep 19, 4:14 am, Rob Beezer wrote: > Has this group been implemented somewhere and I missed it?  Is there > some other powerful machinery for rings that might make this easier to > implement?  Any code elsewhere for a similar structure or purpose that > I might look to for help in designing