On Aug 21, 2009, at 1:47 PM, William Stein wrote:
> On Thu, Aug 20, 2009 at 1:37 PM, Golam Mortuza Hossain
> wrote:
>
> Hi,
>
> On Thu, Aug 20, 2009 at 3:03 PM, Jason Grout s...@creativetrax.com> wrote:
> >> I guess, a policy decision is involved here as to whether use
> mathematical
> >> id
Hi.
On Fri, Aug 21, 2009 at 5:47 PM, William Stein wrote:
>
>> Personally, I am for accepting pynac's answer by default as it
>> would massively speed up test like "if x in list" for symbolics.
>
> We must default to pynac, in my opinion. The question then just becomes
> how to make pynac's comp
On Thu, Aug 20, 2009 at 1:37 PM, Golam Mortuza Hossain
wrote:
>
> Hi,
>
> On Thu, Aug 20, 2009 at 3:03 PM, Jason Grout
> wrote:
> >> I guess, a policy decision is involved here as to whether use
> mathematical
> >> identities by default or as an option during comparison. To clarify:
> >>
> >> ex =
Hi,
On Thu, Aug 20, 2009 at 3:03 PM, Jason Grout wrote:
>> I guess, a policy decision is involved here as to whether use mathematical
>> identities by default or as an option during comparison. To clarify:
>>
>> ex = sin(x)^2 + cos(x)^2 - 1
>>
>> In pynac, for above expression "ex.is_zero()" test
Golam Mortuza Hossain wrote:
> Hi,
>
>
> On Thu, Aug 20, 2009 at 1:28 PM, William Stein wrote:
>> On Thu, Aug 20, 2009 at 4:11 AM, Golam Mortuza
>> Hossain wrote:
>>> Hi,
>>>
>>> It takes too long to check whether x is in a list in new symbolics
>>>
>>> -
>>> sage: var('x,x1,x2,x3,x4')
>
On Thu, Aug 20, 2009 at 9:57 AM, Golam Mortuza
Hossain wrote:
>
> Hi,
>
>
> On Thu, Aug 20, 2009 at 1:28 PM, William Stein wrote:
>>
>> On Thu, Aug 20, 2009 at 4:11 AM, Golam Mortuza
>> Hossain wrote:
>>>
>>> Hi,
>>>
>>> It takes too long to check whether x is in a list in new symbolics
>>>
>>> --
Hi,
On Thu, Aug 20, 2009 at 1:28 PM, William Stein wrote:
>
> On Thu, Aug 20, 2009 at 4:11 AM, Golam Mortuza
> Hossain wrote:
>>
>> Hi,
>>
>> It takes too long to check whether x is in a list in new symbolics
>>
>> -
>> sage: var('x,x1,x2,x3,x4')
>> (x, x1, x2, x3, x4)
>> sage: f = funct
On Thu, Aug 20, 2009 at 4:11 AM, Golam Mortuza
Hossain wrote:
>
> Hi,
>
> It takes too long to check whether x is in a list in new symbolics
>
> -
> sage: var('x,x1,x2,x3,x4')
> (x, x1, x2, x3, x4)
> sage: f = function('f')
> sage: mylist = [x1,x2,x3,x4,f(x1),f(x2),f(x3),f(x4)]
>
> sage: t
