On 1 Jun., 18:56, Carl Witty <[EMAIL PROTECTED]> wrote:
> Sage has such a decision procedure built in to its implementation of
> QQbar, the algebraic numbers.
But I have to say they are quite hidden in the reference manual.
Thank you for this hint. I also found AA the algebraic reals if your
comp
Referring to http://trac.sagemath.org/sage_trac/ticket/3212, I have to
do a little cleaning up before submitting it for review, but have some
code for allowing rescaling of matrices by "logical" scalars not in
the base ring. However, in order to do this, I need to return a copy,
not modify the or
kcrisman wrote:
> Referring to http://trac.sagemath.org/sage_trac/ticket/3212, I have to
> do a little cleaning up before submitting it for review, but have some
> code for allowing rescaling of matrices by "logical" scalars not in
> the base ring. However, in order to do this, I need to return a
On Mon, Jun 2, 2008 at 1:30 AM, Henryk Trappmann
<[EMAIL PROTECTED]> wrote:
>
> On 1 Jun., 18:56, Carl Witty <[EMAIL PROTECTED]> wrote:
>> Sage has such a decision procedure built in to its implementation of
>> QQbar, the algebraic numbers.
>
> But I have to say they are quite hidden in the refere
On Mon, Jun 2, 2008 at 9:45 AM, Carl Witty <[EMAIL PROTECTED]> wrote:
>
> On Jun 2, 9:17 am, "William Stein" <[EMAIL PROTECTED]> wrote:
>> On Mon, Jun 2, 2008 at 1:30 AM, Henryk Trappmann
>> > But back to SymbolicRing and SymbolicConstant.
>> > I have the following improvement
>> > SUGGESTION: whe
On Jun 2, 9:17 am, "William Stein" <[EMAIL PROTECTED]> wrote:
> On Mon, Jun 2, 2008 at 1:30 AM, Henryk Trappmann
> > But back to SymbolicRing and SymbolicConstant.
> > I have the following improvement
> > SUGGESTION: when creating sqrt(2) or other roots from integers, then
> > assign to them the p
Dear friend:
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Mp4, GPS, and so on.
In order to gratulate Olympic Games of 2008 in Beijing,
On Mon, Jun 2, 2008 at 7:17 AM, Jason Grout <[EMAIL PROTECTED]> wrote:
>
> kcrisman wrote:
>> Referring to http://trac.sagemath.org/sage_trac/ticket/3212, I have to
>> do a little cleaning up before submitting it for review, but have some
>> code for allowing rescaling of matrices by "logical" sca
Hello.
The last email you just received "from me" was in fact from a spammer
impersonating my email account.
I'm sorry for any inconvenience this may cause.
-- William
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
--~--~-~--~~
On Mon, Jun 2, 2008 at 10:17 AM, Carl Witty <[EMAIL PROTECTED]> wrote:
>
> On Jun 2, 9:31 am, "William Stein" <[EMAIL PROTECTED]> wrote:
>> On Mon, Jun 2, 2008 at 7:17 AM, Jason Grout <[EMAIL PROTECTED]> wrote:
>>
>> > kcrisman wrote:
>> >> Referring tohttp://trac.sagemath.org/sage_trac/ticket/321
On Jun 2, 9:31 am, "William Stein" <[EMAIL PROTECTED]> wrote:
> On Mon, Jun 2, 2008 at 7:17 AM, Jason Grout <[EMAIL PROTECTED]> wrote:
>
> > kcrisman wrote:
> >> Referring tohttp://trac.sagemath.org/sage_trac/ticket/3212, I have to
> >> do a little cleaning up before submitting it for review, but
On Jun 1, 2008, at 2:13 AM, Martin Albrecht wrote:
>
>> I didn't even know there was a log_b, so I would be *very* happy
>> to delete it.
>>
>> -- William
>
> They are not the same:
>
> sage: log_b(10,2)
> 3.32192809489
> sage: log(10,2)
> log(10)/log(2)
>
> but log(10,2).n() is.
I don't think
On May 31, 2008, at 8:45 AM, Andrey Novoseltsev wrote:
> I looked at the new site the second time and liked it much more!
Me too, even better than last time.
> Some other ideas/comments:
> 1) I think that the main page would look better if "Our mission" is in
> bold and starts a separate paragr
Hi,
I've posted a first very very (very) minimal "quantitative finance"
piece of code here:
http://trac.sagemath.org/sage_trac/ticket/3346
I hope somebody who has some interest in this area will referee it.
-- William
--
William Stein
Associate Professor of Mathematics
University
William Stein wrote:
> On Mon, Jun 2, 2008 at 7:17 AM, Jason Grout <[EMAIL PROTECTED]> wrote:
>> kcrisman wrote:
>>> Referring to http://trac.sagemath.org/sage_trac/ticket/3212, I have to
>>> do a little cleaning up before submitting it for review, but have some
>>> code for allowing rescaling of
On Jun 2, 2008, at 10:19 AM, William Stein wrote:
>
> On Mon, Jun 2, 2008 at 10:17 AM, Carl Witty <[EMAIL PROTECTED]>
> wrote:
>>
>> On Jun 2, 9:31 am, "William Stein" <[EMAIL PROTECTED]> wrote:
>>> On Mon, Jun 2, 2008 at 7:17 AM, Jason Grout >> [EMAIL PROTECTED]> wrote:
>>>
kcrisman wrote
On Jun 2, 2008, at 9:47 AM, William Stein wrote:
> On Mon, Jun 2, 2008 at 9:45 AM, Carl Witty <[EMAIL PROTECTED]>
> wrote:
>>
>> On Jun 2, 9:17 am, "William Stein" <[EMAIL PROTECTED]> wrote:
>>> On Mon, Jun 2, 2008 at 1:30 AM, Henryk Trappmann
But back to SymbolicRing and SymbolicConstant.
Hi, just some short comments by me, since I'm responsible ;)
On Jun 2, 7:58 pm, Robert Bradshaw <[EMAIL PROTECTED]>
wrote:
> On May 31, 2008, at 8:45 AM, Andrey Novoseltsev wrote:
> Also, I think it might be better for the text to be left-
> justified (but still centered in the page).
Yeahr, wel
On Jun 2, 7:46 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I've posted a first very very (very) minimal "quantitative finance"
> piece of code here:
I have briefly looked at the code and I'm curious: How significant is
the speed difference between R, using an ts() object and fSerie
On Mon, Jun 2, 2008 at 12:02 PM, Harald Schilly
<[EMAIL PROTECTED]> wrote:
>
>
>
> On Jun 2, 7:46 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
>> Hi,
>>
>> I've posted a first very very (very) minimal "quantitative finance"
>> piece of code here:
>
> I have briefly looked at the code and I'm cur
For who is interested:
http://sview01.wiredworkplace.net/pub/vfplot/
Jaap
--~--~-~--~~~---~--~~
To post to this group, send email to sage-devel@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
On Jun 2, 2008, at 11:44 AM, Harald Schilly wrote:
> Hi, just some short comments by me, since I'm responsible ;)
>
> On Jun 2, 7:58 pm, Robert Bradshaw <[EMAIL PROTECTED]>
> wrote:
>> On May 31, 2008, at 8:45 AM, Andrey Novoseltsev wrote:
>> Also, I think it might be better for the text to be le
We could easily change this so that we by default go ahead and coerce
the log(10) to RR if its multiplied by something in RR. (so that we
end up with a numeric result). This is probably a good idea.
On Mon, Jun 2, 2008 at 12:05 PM, Robert Bradshaw
<[EMAIL PROTECTED]> wrote:
>
>
> On Jun 1, 2008,
On Mon, Jun 2, 2008 at 12:53 PM, Gary Furnish <[EMAIL PROTECTED]> wrote:
>
> -1. First, everything cwitty said is correct. Second, if we start
> using ZZ[sqrt(2)] and ZZ[sqrt(3)], then sqrt(2)+sqrt(3) requires going
> through the coercion system which was designed to be elegant instead
> of fast,
On Mon, Jun 2, 2008 at 12:13 PM, Jaap Spies <[EMAIL PROTECTED]> wrote:
>
> For who is interested:
>
> http://sview01.wiredworkplace.net/pub/vfplot/
>
What is it? Have *you* tried it? Did you like it or not? How do you think
it might be relevant to Sage?
William
--~--~-~--~~--
-1. First, everything cwitty said is correct. Second, if we start
using ZZ[sqrt(2)] and ZZ[sqrt(3)], then sqrt(2)+sqrt(3) requires going
through the coercion system which was designed to be elegant instead
of fast, so this becomes insanely slow for any serious use. Finally,
this is going to requ
William Stein wrote:
> On Mon, Jun 2, 2008 at 12:13 PM, Jaap Spies <[EMAIL PROTECTED]> wrote:
>> For who is interested:
>>
>> http://sview01.wiredworkplace.net/pub/vfplot/
>>
>
> What is it? Have *you* tried it? Did you like it or not? How do you think
> it might be relevant to Sage?
>
No, I
>
> >> Maybe rescale_row and rescale_col should retain their current
> >> semantics, and we should have new methods with_rescaled_row and
> >> with_rescaled_col that always return a modified copy and never modify
> >> the original. Then rescale_row and rescale_col could catch the type
> >> error
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi William,
William Stein wrote:
| That said I really *really* want a full native version of Sage on
Windows...
I've been wondering about this for a while. Are you referring
specifically to MSVC support or "it gets compiled natively under
windows" (
On Jun 2, 11:11 pm, Francesco Biscani <[EMAIL PROTECTED]> wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
>
> Hi William,
Hi Francesco,
> William Stein wrote:
>
> | That said I really *really* want a full native version of Sage on
> Windows...
>
> I've been wondering about this for a
On May 14, 12:11 am, "William Stein" <[EMAIL PROTECTED]> wrote:
> On Tue, May 13, 2008 at 8:50 PM, Andrey Novoseltsev <[EMAIL PROTECTED]> wrote:
>
> > 1) I think that completely white background would be the best.
>
> I would love to see what this looks like.
Using the Web Developer extension
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Hi Michael,
mabshoff wrote:
| For 32 bits we are fixing the Cygwin issues and one goal for Dev1
| [starting in a little less than two weeks] is to get that port up and
| working again. MinGW's support for Python is allegedly problematic, at
| least d
2008/6/2 William Stein <[EMAIL PROTECTED]>:
>
> On Mon, Jun 2, 2008 at 12:53 PM, Gary Furnish <[EMAIL PROTECTED]> wrote:
>>
>> -1. First, everything cwitty said is correct. Second, if we start
>> using ZZ[sqrt(2)] and ZZ[sqrt(3)], then sqrt(2)+sqrt(3) requires going
>> through the coercion system
There is a free library for quantitaive finance called quantlib
http://quantlib.org/
The library is writen in C++ but comes with python bindings.
The licence is modified BSD (http://quantlib.org/license.shtml) (wich is
GPL-compatible)
Perhaps you might want to integrate it into sage
The more
On Jun 2, 11:51 pm, Francesco Biscani <[EMAIL PROTECTED]> wrote:
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
>
> Hi Michael,
Hi Francesco,
> mabshoff wrote:
>
> | For 32 bits we are fixing the Cygwin issues and one goal for Dev1
> | [starting in a little less than two weeks] is to get that
On Mon, Jun 2, 2008 at 3:19 PM, John Cremona <[EMAIL PROTECTED]> wrote:
>
> 2008/6/2 William Stein <[EMAIL PROTECTED]>:
>>
>> On Mon, Jun 2, 2008 at 12:53 PM, Gary Furnish <[EMAIL PROTECTED]> wrote:
>>>
>>> -1. First, everything cwitty said is correct. Second, if we start
>>> using ZZ[sqrt(2)] an
On 6/2/08, William Stein <[EMAIL PROTECTED]> wrote:
> Doing that sum works fine now. It's even fun. That
> all the following work fine even with our current system
> says something...
>
> sage: a = sum([sqrt(p) for p in primes(1000)])
> sage: float(a)
> 3307.7690992952139
> sage: RDF(a)
BTW, if I change the iteration limit to 250 or more, I get a : maximum recursion depth exceeded
when evaluating float(a)... (sage 3.0)
Gonzalo
On 6/2/08, Gonzalo Tornaria <[EMAIL PROTECTED]> wrote:
> On 6/2/08, William Stein <[EMAIL PROTECTED]> wrote:
> > Doing that sum works fine now. It's
On Mon, Jun 2, 2008 at 5:15 PM, Gonzalo Tornaria
<[EMAIL PROTECTED]> wrote:
>
> On 6/2/08, William Stein <[EMAIL PROTECTED]> wrote:
>> Doing that sum works fine now. It's even fun. That
>> all the following work fine even with our current system
>> says something...
>>
>> sage: a = sum([sqr
On 6/2/08, William Stein <[EMAIL PROTECTED]> wrote:
> > sage: a = e - 1
> > sage: for i in range(2,200):
> > : a = (a-1)*i
> > :
> > sage: float(a)
> > -inf
>
>
> Oh my god, floating point numbers are just broken!
>
:-)
> Seriously, floating point numbers are what they are
On 6/1/08, Andrej Vodopivec <[EMAIL PROTECTED]> wrote:
> As I have mentioned in some other thread, even if most of the code is
> GPLv2+, there are files which are GPLv2 only:
Yeah -- some of those are files which I created.
I am willing to change those from GPL v2 to GPL nonspecific.
About the
On Mon, Jun 2, 2008 at 8:15 PM, Robert Dodier <[EMAIL PROTECTED]> wrote:
>
> On 6/1/08, Andrej Vodopivec <[EMAIL PROTECTED]> wrote:
>
>> As I have mentioned in some other thread, even if most of the code is
>> GPLv2+, there are files which are GPLv2 only:
>
> Yeah -- some of those are files which
On Mon, Jun 2, 2008 at 9:51 PM, Igor Tolkov <[EMAIL PROTECTED]> wrote:
>
> I am trying to extend the integer class:
>
> {{
> class Quple(Integer):
>def __init__(self, a, b):
>Integer.__init__(self, b)
>self.tup = (a, b)
>
> print Quple(3,1)
> ///
>
> 0
> }}}
>
> I should get "
On Mon, Jun 2, 2008 at 10:15 PM, Robert Bradshaw
<[EMAIL PROTECTED]> wrote:
>
> On Jun 2, 2008, at 9:51 PM, Igor Tolkov wrote:
>
>> I am trying to extend the integer class:
>>
>> {{
>> class Quple(Integer):
>> def __init__(self, a, b):
>> Integer.__init__(self, b)
>> self.tup =
On Jun 2, 2008, at 10:18 PM, William Stein wrote:
> On Mon, Jun 2, 2008 at 10:15 PM, Robert Bradshaw
> <[EMAIL PROTECTED]> wrote:
>>
>> On Jun 2, 2008, at 9:51 PM, Igor Tolkov wrote:
>>
>>> I am trying to extend the integer class:
>>>
>>> {{
>>> class Quple(Integer):
>>> def __init__(self, a,
On Mon, Jun 2, 2008 at 10:30 PM, Robert Bradshaw
<[EMAIL PROTECTED]> wrote:
>
> On Jun 2, 2008, at 10:18 PM, William Stein wrote:
>
>> On Mon, Jun 2, 2008 at 10:15 PM, Robert Bradshaw
>> <[EMAIL PROTECTED]> wrote:
>>>
>>> On Jun 2, 2008, at 9:51 PM, Igor Tolkov wrote:
>>>
I am trying to exten
>sage: class foo:
>... def __init__(self, a):
>... self.b = a
>sage: f = foo(10)
>sage: f.b
>10
>sage: f.__init__(20)
>sage: f.b
>20
>
>Well Sage hasn't exploded already because of this, so
>I guess we'll just have to live with it.
Excellent. Now we can inflate integers to match t
On Jun 2, 2008, at 12:55 PM, William Stein wrote:
> On Mon, Jun 2, 2008 at 12:53 PM, Gary Furnish
> <[EMAIL PROTECTED]> wrote:
>>
>> -1. First, everything cwitty said is correct.
More on this below.
>> Second, if we start
>> using ZZ[sqrt(2)] and ZZ[sqrt(3)], then sqrt(2)+sqrt(3) requires
>
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