Re: [fricas-devel] Localizations

2019-05-14 Thread Prof. Dr. Johannes Grabmeier privat
yes, my code is not yet in a showable shape, I will finalize it asap. Am 11.05.19 um 17:08 schrieb Ralf Hemmecke: > On 5/11/19 12:23 PM, Prof. Dr. Johannes Grabmeier privat wrote: >> I have various implementations and improbement of localizations done, if >> interested I can go through it again

Re: [fricas-devel] Localizations

2019-05-12 Thread Waldek Hebisch
Johannes Grabmeier wrote: > > I have various implementations and improbement of localizations done, if > interested I can go through it again and we can think how we improve the > current code. I am interested. ATM I have a lot of distractions, but I hope to respond resonably fast. --

Re: [fricas-devel] Localizations

2019-05-11 Thread Ralf Hemmecke
On 5/11/19 12:23 PM, Prof. Dr. Johannes Grabmeier privat wrote: > I have various implementations and improbement of localizations done, if > interested I can go through it again and we can think how we improve the > current code. Do you mean improvement of

Re: [fricas-devel] Localizations

2019-05-11 Thread Prof. Dr. Johannes Grabmeier privat
I have various implementations and improbement of localizations done, if interested I can go through it again and we can think how we improve the current code. Am 10.05.18 um 16:30 schrieb Waldek Hebisch: > Various localizations seem to play important role in algebra > so we would like to support

Re: [fricas-devel] Localizations

2018-05-13 Thread Ralf Hemmecke
>> PS: I'm sure, you have also found fricas.github.io/api/Localize.html . >> That domain looked somehow weird to me. For a localization, I would >> expect a ring R and a multiplicative closed set S and then form >> S^(-1)R. Why Localize(M, R) wants R to be a CommutativeRing, is not >> completely

Re: [fricas-devel] Localizations

2018-05-13 Thread Ralf Hemmecke
> "samba" looks a lot like variations of Groebner bases advocated by > Mora. I wonder if "samba" is just a special case or a new variation > unknow before. Thanks for reading the article. Yes, samba is a "critical pair/completion" algorithm, but it's not a Gröbner basis that comes out. The

Re: [fricas-devel] Localizations

2018-05-13 Thread Waldek Hebisch
Ralf Hemmecke wrote: > > Hi Waldek, > > in general, I am, of course, for generalisations. Do you only want > Z --> R:GcdDomain > Q --> Fraction(R) > ? > > What is your concrete application for such a generalisation? > > Do you have also other things in mind? ATM I am in planning stage.

Re: [fricas-devel] Localizations

2018-05-12 Thread Ralf Hemmecke
Hi Waldek, in general, I am, of course, for generalisations. Do you only want Z --> R:GcdDomain Q --> Fraction(R) ? What is your concrete application for such a generalisation? Do you have also other things in mind? I used it in my article

[fricas-devel] Localizations

2018-05-10 Thread Waldek Hebisch
Various localizations seem to play important role in algebra so we would like to support them. ATM I am not sure how to implement more general localizations. However, as a small step I looked at IntegerLocalizedAtPrime. It compiles when I replaced Z by a GcdDomain R and Q by Fraction(R). And