Re: [sage-devel] Re: Groebner basis (rounding?) bug

2017-02-17 Thread 'Bill Hart' via sage-devel
I asked Hans Schoenemann about this. Whilst Singular does support doing Groebner bases over inexact fields, there is no error checking and so this is not considered useful. It's only there for people who want to run the computation and examine the output themselves and see if they think it is

Re: [sage-devel] Re: Groebner basis (rounding?) bug

2017-02-17 Thread Dima Pasechnik
On Friday, February 17, 2017 at 4:51:49 AM UTC, john_perry_usm wrote: > > On Thursday, February 16, 2017 at 1:46:18 AM UTC-6, Dima Pasechnik wrote: >> >> >> >> On Thursday, February 16, 2017 at 6:59:04 AM UTC, William wrote: >>> >>> **Disclaimer: I consider myself very naive about computational

Re: [sage-devel] Re: Groebner basis (rounding?) bug

2017-02-16 Thread john_perry_usm
On Thursday, February 16, 2017 at 1:46:18 AM UTC-6, Dima Pasechnik wrote: > > > > On Thursday, February 16, 2017 at 6:59:04 AM UTC, William wrote: >> >> **Disclaimer: I consider myself very naive about computational >> commutative algebra, especially with floating point numbers. Dima, >> thanks

Re: [sage-devel] Re: Groebner basis (rounding?) bug

2017-02-16 Thread Dima Pasechnik
On Thursday, February 16, 2017 at 7:46:18 AM UTC, Dima Pasechnik wrote: > > > > On Thursday, February 16, 2017 at 6:59:04 AM UTC, William wrote: >> >> **Disclaimer: I consider myself very naive about computational >> commutative algebra, especially with floating point numbers. Dima, >> thanks

Re: [sage-devel] Re: Groebner basis (rounding?) bug

2017-02-15 Thread Dima Pasechnik
On Thursday, February 16, 2017 at 6:59:04 AM UTC, William wrote: > > **Disclaimer: I consider myself very naive about computational > commutative algebra, especially with floating point numbers. Dima, > thanks for answering the question, but I think you are maybe jumping > to wronc

Re: [sage-devel] Re: Groebner basis (rounding?) bug

2017-02-15 Thread William Stein
**Disclaimer: I consider myself very naive about computational commutative algebra, especially with floating point numbers. Dima, thanks for answering the question, but I think you are maybe jumping to wronc conclusions. See below. ** > The backend that actually does this computation is