Unfortunately, the piecewise class was written before the symbolic
expressions class and has not kept pace.
The obvious solution produced this:
sage: signal = Piecewise([[(0,1), cos(2*pi*1*x)], [(-1, 0), 0*x]])
sage: signal.integral(definite=True)
---
Hello,
there is signal function:
signal = Piecewise([
[(0,5), cos(2*pi*1*x) ],
[(5,10), cos(2*pi*2.5*x) ],
])
And window function:
window = Piecewise([[(-1,1),1]])
And the result function:
r=window*signal
How can I integrate it now? I'am trying:
r.integral(definite=True)
but it leads to error
Robert Bradshaw wrote:
>> With my design -- which just happens to be the bog
>> standard design that is used everywhere (web pages, etc.), imho --
>> even autogenerated references would work fine (since they are
>> relative). Plus, sticking with a standard design means it will be
>> easier for p
On Tue, Dec 8, 2009 at 12:41 PM, Robert Bradshaw
wrote:
> On Dec 8, 2009, at 12:26 PM, William Stein wrote:
>
>> On Tue, Dec 8, 2009 at 12:14 PM, Jason Grout
>> wrote:
>>> William Stein wrote:
>>>
> I guess what I'm advocating is that it would be useful for the
> underlying ID to be (prob
On Dec 8, 2009, at 12:26 PM, William Stein wrote:
> On Tue, Dec 8, 2009 at 12:14 PM, Jason Grout
> wrote:
>> William Stein wrote:
>>
I guess what I'm advocating is that it would be useful for the
underlying ID to be (probabilistically) globally unique, not just
unique for a user or
On Tue, Dec 8, 2009 at 12:31 PM, Robert Bradshaw
wrote:
> On Dec 8, 2009, at 11:54 AM, William Stein wrote:
>
>> On Tue, Dec 8, 2009 at 11:04 AM, Robert Bradshaw
>> wrote:
>>>
>>>
>>> I think you misunderstood my proposal--
>>
>> Yes, I'm sure I did, since I also don't understand your further
>>
On Dec 8, 2009, at 11:54 AM, William Stein wrote:
> On Tue, Dec 8, 2009 at 11:04 AM, Robert Bradshaw
> wrote:
>>
>>
>> I think you misunderstood my proposal--
>
> Yes, I'm sure I did, since I also don't understand your further
> explanation of it below.
>
>> all the user would see is the
>> frien
On Tue, Dec 8, 2009 at 12:14 PM, Jason Grout
wrote:
> William Stein wrote:
>
>>> I guess what I'm advocating is that it would be useful for the
>>> underlying ID to be (probabilistically) globally unique, not just
>>> unique for a user or a specific notebook server.
>>
>> (1) How is that useful?
>
William Stein wrote:
>> I guess what I'm advocating is that it would be useful for the
>> underlying ID to be (probabilistically) globally unique, not just
>> unique for a user or a specific notebook server.
>
> (1) How is that useful?
> (2) Why don't web pages, wiki pages (?), latex documents, e
On Tue, Dec 8, 2009 at 11:04 AM, Robert Bradshaw
wrote:
> On Dec 8, 2009, at 10:17 AM, William Stein wrote:
>
>> On Tue, Dec 8, 2009 at 9:06 AM, Robert Bradshaw
>> wrote:
>>> On Dec 8, 2009, at 4:49 AM, Stan Schymanski wrote:
>>>
Robert Bradshaw wrote:
[SNIP]
> Making notebook IDs t
On Dec 8, 2009, at 10:17 AM, William Stein wrote:
> On Tue, Dec 8, 2009 at 9:06 AM, Robert Bradshaw
> wrote:
>> On Dec 8, 2009, at 4:49 AM, Stan Schymanski wrote:
>>
>>> Robert Bradshaw wrote:
>>> [SNIP]
Making notebook IDs that are not simply consecutive
integers would solve nearly all
On Tue, Dec 8, 2009 at 8:47 AM, Pierre wrote:
> this is definitely a bug, right ?
>
> sage: k= CyclotomicField(4, "i")
> sage: poly= PolynomialRing(k, "x")
> sage: x= poly.gen()
> sage: p= 3; K= NumberField(x^2 - p, "r")
> sage: i= K( k.gen() )
> sage: CDF(i)
> 2.31897834269e-14 - 1.0*I
>
> So i i
On Tue, Dec 8, 2009 at 4:49 AM, Stan Schymanski wrote:
> Robert Bradshaw wrote:
> [SNIP]
>> Making notebook IDs that are not simply consecutive
>> integers would solve nearly all of your issues above, and I think a
>> lot of people (myself included) would appreciate that. Either short
>> names or
On Tue, Dec 8, 2009 at 9:06 AM, Robert Bradshaw
wrote:
> On Dec 8, 2009, at 4:49 AM, Stan Schymanski wrote:
>
>> Robert Bradshaw wrote:
>> [SNIP]
>>> Making notebook IDs that are not simply consecutive
>>> integers would solve nearly all of your issues above, and I think a
>>> lot of people (mysel
On Tue, Dec 8, 2009 at 9:48 AM, hms wrote:
> Everything seems fine: virtualbox no longer crashes after "import
> appliance"; sage command line and notebook are working.
>
> --hms
>
Excellent. Many thanks for testing this!
William
--
To post to this group, send email to sage-support@googlegrou
Hi Robert,
On Wed, Dec 9, 2009 at 4:08 AM, Robert Bradshaw
wrote:
> It should be sage-support+unsubscr...@googlegroups.com
>
> http://groups.google.com/support/bin/answer.py?hl=en&answer=46608
Thank you very much for pointing this out. I have accordingly adjusted
the footers of sage-support a
On Tue, Dec 8, 2009 at 12:08 PM, Robert Bradshaw
wrote:
> On Dec 8, 2009, at 8:05 AM, kcrisman wrote:
>
>> I don't get why people can't unsubscribe themselves?
>
> They can. This is footer is wrong:
>
>> To post to this group, send email to sage-support@googlegroups.com
>> To unsubscribe from this
Everything seems fine: virtualbox no longer crashes after "import
appliance"; sage command line and notebook are working.
--hms
William Stein wrote:
> On Tue, Dec 8, 2009 at 6:59 AM, Harald Schilly
> wrote:
> > On Dec 8, 12:45 am, William Stein wrote:
> >> Thanks. I'll upgrade my virtualbox
Brilliant, thanks. Very easy, and it works! Sorry I did not find
that myself the Manage Users facility looks excellent!
John
On Dec 8, 4:39 pm, William Stein wrote:
> On Tue, Dec 8, 2009 at 6:47 AM, John Cremona wrote:
> > Is it possible to reset the password of a use who has created an
>
On Dec 8, 2009, at 4:49 AM, Stan Schymanski wrote:
> Robert Bradshaw wrote:
> [SNIP]
>> Making notebook IDs that are not simply consecutive
>> integers would solve nearly all of your issues above, and I think a
>> lot of people (myself included) would appreciate that. Either short
>> names or glob
On Dec 8, 2009, at 8:05 AM, kcrisman wrote:
> I don't get why people can't unsubscribe themselves?
They can. This is footer is wrong:
> To post to this group, send email to sage-support@googlegroups.com
> To unsubscribe from this group, send email to
> sage-support-unsubscr...@googlegroups.com
--
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To unsubscribe from this group, send email to
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URL: http://www.sagemath.org
The topic of integer points on elliptic curves is a big and
interesting one, which should probably be discussed in sage-nt rather
than sage-support (if one sage-* at all!). So I will be brief.
This is NOT about the Nagel-Lutz Theorem. That says that points of
finite order on elliptic curves (def
this is definitely a bug, right ?
sage: k= CyclotomicField(4, "i")
sage: poly= PolynomialRing(k, "x")
sage: x= poly.gen()
sage: p= 3; K= NumberField(x^2 - p, "r")
sage: i= K( k.gen() )
sage: CDF(i)
2.31897834269e-14 - 1.0*I
So i is converted to roughly -i... which can makes sense as it's just
a c
On Tue, Dec 8, 2009 at 6:47 AM, John Cremona wrote:
> Is it possible to reset the password of a use who has created an
> account but forgotten her password?
>
> When I looked at the docstring of notebook() I found it rather
> confusing: especially this part:
>
> accounts -- (defaul
On Tue, Dec 8, 2009 at 6:59 AM, Harald Schilly wrote:
> On Dec 8, 12:45 am, William Stein wrote:
>> Thanks. I'll upgrade my virtualbox and re-export the virtualmachine.
>>
>
> Updated virtualbox image now available.
> Downloaded best via a metalink using http://www.downthemall.net/ or
> http://a
I don't get why people can't unsubscribe themselves?
- kcrisman
On Dec 8, 10:44 am, Minh Nguyen wrote:
> Hi Neil,
>
> On Wed, Dec 9, 2009 at 2:20 AM, Neil MacKenzie
> wrote:
> > please
> > :-)
>
> At your request, you are now unsubscribed from the sage-support mailing list.
>
> --
> Regards
>
Hi Neil,
On Wed, Dec 9, 2009 at 2:20 AM, Neil MacKenzie wrote:
> please
> :-)
At your request, you are now unsubscribed from the sage-support mailing list.
--
Regards
Minh Van Nguyen
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send em
please:-)
--
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To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com
For more options, visit this group at http://groups.google.com/group/sage-support
URL: http://www.sagemath.org
On Dec 8, 12:45 am, William Stein wrote:
> Thanks. I'll upgrade my virtualbox and re-export the virtualmachine.
>
Updated virtualbox image now available.
Downloaded best via a metalink using http://www.downthemall.net/ or
http://aria2.sourceforge.net/ and this file:
http://www.sagemath.org/mirro
Is it possible to reset the password of a use who has created an
account but forgotten her password?
When I looked at the docstring of notebook() I found it rather
confusing: especially this part:
accounts -- (default: False) if True, any visitor to
the
Robert Bradshaw wrote:
[SNIP]
> Making notebook IDs that are not simply consecutive
> integers would solve nearly all of your issues above, and I think a
> lot of people (myself included) would appreciate that. Either short
> names or globally unique identifiers (or some combination of both)
Hi Arun,
On Tue, Dec 8, 2009 at 2:56 PM, arun Muktibodh wrote:
> Please unsubscribe me.
At your request, I have unsubscribed you from the sage-support mailing list.
--
Regards
Minh Van Nguyen
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