I need to package all the test site applications into one massive PDF, a mildly
tedious affair.
This cannot be an appendix, but should go in "Supplemental Material". But it
should not look like effusive "letters of support." The AMATYC material follows
the guidelines perfectly - just a factu
On Thursday, June 16, 2016 at 8:00:20 PM UTC-7, kcrisman wrote:
> You can embed them.
>
> https://www.rstudio.com/faq-items/can-i-embed-shiny-apps-in-other-websites-e-g-iframes/
>
> However, I don't see an obvious way to get this to interact easily with
> the Sage cell framework, it's completely
Dear Nils,
Thanks for the careful explanation. There's a good reason I don't teach
this stuff (even if I enjoy it!).
Rob
On Thursday, November 5, 2015 at 7:35:47 PM UTC-8, Nils Bruin wrote:
>
> On Thursday, November 5, 2015 at 5:11:42 PM UTC-8, Rob Beezer wrote:
>>
>
due there is surely undefined ?
> On Nov 5, 2015 3:53 AM, "Rob Beezer" > wrote:
>
>>
>>
>> On Wednesday, November 4, 2015 at 7:37:58 PM UTC-8, vdelecroix wrote:
>>>
>>> z/2 vs 2/z
>>>
>>
>> Ouch! Sorry. Wro
On Wednesday, November 4, 2015 at 7:37:58 PM UTC-8, vdelecroix wrote:
>
> z/2 vs 2/z
>
Ouch! Sorry. Wrong input, same output.
z = var('z')
f = e^(2/z)
f.residue(z)
Result: 0
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My complex analysis is very rusty, so I can't tell if the problem here is
me or Sage:
z = var('z')
f = e^(z/2)
f.residue(z)
Result: 0
x = var('x')
g = e^x
t = g.taylor(x, 0, 5)
t(x = 2/z)
Result: 2/z + 2/z^2 + 4/3/z^3 + 2/3/z^4 + 4/15/z^5 + 1
So the coefficient of 1/z is 2, and the residue sh
Thanks, David. I'll watch those tickets. -Rob
On Sunday, April 8, 2012 1:16:52 AM UTC-7, David Loeffler wrote:
>
>
> There have been at least two attempts to implement this; see #8335, and
> more recently, #11938. Sadly both of these are "needs work". It would be
> great if someone could finis
Is there a way to build subfields of finite fields that will behave as
subfields?
For example, a finite field of order 3^6 will have proper subfields of
order 3^1, 3^2, 3^3. The first is not too interesting and can be recovered
with the .prime_subfield() method. I can easily build the set of
Can you replace
L.level_sets()[-3:-2][0]
by
L.level_sets()[-3] ?
On Feb 25, 7:05 pm, Ryan Davis wrote:
> L.level_sets()[-3:-2][0][i].element.property() is the only way I've
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sa
Is this better?
sage: [var('b'+str(i), latex_name="\\beta_"+str(i),domain='real') for
i in range(4)]
[b0, b1, b2, b3]
sage: latex(b3)
\beta_3
Rob
On Feb 25, 2:08 am, Rolandb wrote:
> Hi,
>
> Is a more compact declaration possible / supported?
>
> var('b0',latex_name="\\beta_0",domain='real')
>
This may be the list you want (all one one line if it gets cut up
here):
indices = [f.element.ambient_ray_indices() for l in L.level_sets()
[-3:-2] for f in l]
And by "address individually" do you mean indices[0], indices[1], etc?
Rob
On Feb 24, 6:48 pm, Ryan Davis wrote:
> Greetings,
>
> I'm
On Feb 21, 12:36 am, emil wrote:
> Hi Rob, you understand more than I do - is this a bug (big step of
> time needed for that type of calculation at an rather arbitrary
> number)? Should I create a track ticket for that? Do you have also an
> opinion on the various other points?
And Martin A knows
On Feb 16, 1:43 am, Manuel Kauers wrote:
> 7. Nullspace for matrices over finite fields is unreasonably slow
>
> sage: M = MatrixSpace(GF(2^31-1), 1000, 1001).random_element();
> sage: %time M.right_kernel();
> CPU times: user 165.71 s, sys: 0.01 s, total: 165.73 s
> Wall time: 166.20 s
>
> Math
I have updated the Linear Algebra Quick Reference card to more closely match
version 4.8 and to catch up on 2.5 years worth of changes. You can find it (and
others) at:
http://wiki.sagemath.org/quickref
Rob
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On Nov 12, 11:51 am, William Stein wrote:
> I developed the discussion about sagenb.com into a blog post:
>
> http://sagemath.blogspot.com/2011/11/is-time-ripe-for-httpsagenbcom.html
+1
I think reserving grants for more experimental or cutting-edge aspects
of Sage, and developing a dot-com ap
On Aug 7, 1:41 pm, Jacob Schlather wrote:
> Sure
>
> processor : 0
> vendor_id : GenuineIntel
Thanks, Jacob. I'll point the other bug report back here.
Rob
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On Aug 6, 9:26 am, William Stein wrote:
> On Sat, Aug 6, 2011 at 9:15 AM, Jacob Schlather
>
> wrote:
> > Compiling the source seems to have fixed it. Thanks for the help.
>
> Excellent! My guess i that the binary had either linbox or MPIR
> compiled with support for some
> processor instructions
On Jul 15, 9:10 am, Henry de Valence wrote:
> Thanks -- I'll look into the process of writing a patch over the
> weekend.
Rather than try to implement kernels over inexact rings, I suspect you
would be better off using an LU decomposition for an RDF/CDF matrix
and making your own decisions on whe
On Jul 13, 8:32 pm, William Stein wrote:
> Sage is probably just using some completely generic general
> implementation of "kernel" for matrices.
Yes, that is correct. It's a totally generic routine and it stands a
very good chance of giving an incorrect result with entries from RDF.
The LU rou
On Apr 6, 8:39 pm, John Cremona wrote:
> where A^* is the conjugate transpose.
You mean the "adjoint of a matrix", right? ;-)
I hijacked this topic and regenerated it over on sage-devel - should
have posted a link earlier:
http://groups.google.com/group/sage-devel/browse_thread/thread/86329
Hi Edgar,
Thanks for the report. We need to get eigenvalues for symbolic
matrices from Maxima (I think), but we could certainly get
eigenvectors naively via matrix kernels as you suggest.
I did a simple experiment and only computed the appropriate kernel for
a symbolic matrix and one of its symb
On Jun 6, 9:05 am, Mike Witt wrote:
> This does kind of reinforce the concept, which I guess I've
> heard expressed before here, that you have to be prepared
> to update your sage build very frequently in order to keep
> up with things.
Exactly. ;-) But with
sage -upgrade
at a system prompt,
10 10:28:43 AM, Rob Beezer wrote:
>
> > I'm working on a guide. Still in *very* rough draft stage, but might
> > be readable in Trac (just click on the version 2 patch). Feedback
> > welcome.
>
> Here is some feedback: (1) This is very useful. I just read through
tend the
> latex capabilities of Sage. Would it be very complicated?
>
> On Jun 6, 4:55 pm, Rob Beezer wrote:
>
> > The Sage notebook uses jsMath to render mathematics. jsMath only
> > implements a (large) subset of TeX, so it is likely that \cancel is
> > not part of
The Sage notebook uses jsMath to render mathematics. jsMath only
implements a (large) subset of TeX, so it is likely that \cancel is
not part of its capabilities. You can see much of what is possible
at:
http://www.math.union.edu/~dpvc/jsMath/symbols/welcome.html
Rob
On Jun 6, 4:31 am, dbjohn
ue
> 0.999848988598 + 5.55111512313e-17*I
> sage: evector
> -0.99984898859777827
> [ 0.999698 + 5.55027684145e-17*I -0.706893234939 + 0.706893234939*I]
> [-0.706893234939 - 0.706893234939*I 0.999698 + 5.55027684145e-17*I]
> sage:
>
> On 06/05/2010 10:41:06 PM, Rob Beezer wro
On Jun 3, 4:34 am, Pierre wrote:
> I'm actually interested in this feature, too. Using
>
> sage: view(expr, viewer='pdf')
>
> is great, but produces a full page with a title. Is there an option to
> produce a tiny PDF with just a formula ?
Try the "tightpage" option:
sage: latex.engine('pdflatex
Mike,
"Right eigenvectors" should be column vectors placed on the right side
of the matrix. The output is a triple for each eigenvalue: eigenvalue
first, then a list of eigenvectors. While the eigenvectors print as
rows, they will behave like columns when you want them to. Indexing
into the out
ation and assume it is correct when
there is no error.
Thanks!
Rob
On Apr 14, 8:06 pm, Alec Mihailovs wrote:
> On Apr 14, 2:08 pm, Rob Beezer wrote:
>
> > Rinse, repeat. First iteration is below. By the time I get to degree
> > 3 the factorizations are taking about 8 hours.
I'm designing a set of exercises for my students that are studying
Galois theory for the first time. I thought it would be "fun" for
them to create a tower of field extensions that creates a splitting
field with a Galois group that is not solvable (S_5 in this case).
So starting with the polynomi
On Jul 22, 10:35 pm, Rob Beezer wrote:
> A student of mine was running a connection to a Sage notebook server
> on his Android phone last Friday. He showed me an interesting plot,
> so I know it was working properly. I'll point him to this discussion
> and see if I can get d
A student of mine was running a connection to a Sage notebook server
on his Android phone last Friday. He showed me an interesting plot,
so I know it was working properly. I'll point him to this discussion
and see if I can get details.
Rob
Dan Christensen wrote:
> Oh, if anyone *has* had succe
Hi Taxman,
Thanks for the excellent suggestions - this is next in my queue. Yes,
some TeX guidance would be helpful, and I'm going to add some, but its
not going to become a full-blown tutorial on installing new TeX
packages. That's "out of scope." ;-)
texhash, mktexls-r, kpsewhich and some n
Taxman,
Thanks for the report. Current behavior is to support latex versions
of graphs by adding two "\usepackage" commands to the preamble. It is
possible tkz-arith.sty should also be added, and maybe something
bigger like tikz and pgf.
Also, the documentation could perhaps be improved b
Jens,
Does the following Sage command-line session begin to do what you
want?
Various parts could be more streamlined and/or automated for a larger
matrix.
Rob
sage: for i in range(4):
: var("a"+str(i))
:
a0
a1
a2
a3
sage: J = matrix(2,2,[a0,a1,a2,a3])
sage: J
[a0 a1]
[a2 a3]
sage
In-Jae,
You can "stack" matrices, which would work here. If top and bottom
are matrices with identical number of columns, then top.stack
(bottom) will return the right thing. left.augment(right) will
build up a matrix "sideways." So for your question above:
sage: a=matrix(ZZ, 5, 20, [1]*(5
#5371 will set better defaults, but only for a new server
installation.
For an existing notebook, to adjust the current save times on
nb.sobj mimic the following session at the sage command line:
sage: nb = load('/home/somebody/.sage/sage_notebook/nb.sobj',
compress=False)
sage: print nb.conf()
I experienced similar symptoms a while back. The notebook frequently
backs up individual worksheets in a "snapshots" directory and you may
have millions of them, but I don't think this was the root of the
problem. There is also a .sage/sage_notebook/nb.sobj file that gets
backed-up regularly (e
Hi Brian,
In a notebook cell, I enter and evaluate:
%latex
$M^\mathsf{T}$
and get back a slanted M and a very crisp, upright superscript T. So
it can be done, but this is accomplished by running a full-blown
instance of TeX and creating a PNG graphic as output. $M^{\sf T}$
looks to render ide
I have made a patch that attempts to limit the number of snapshots
that get saved (per worksheet) to an absolute maximum of 30. There's
a bit of a dilemma about just how to do this, given that at present
some users will have more than 30 snapshots for some worksheets, and
in the future this limit
On Apr 22, 5:36 pm, William Stein wrote:
> Does anybody here ever use snapshots?
I have never used a snapshot, that I am aware of. I've lost a cell or
two due to crashes, but I think this was always due to my flaky USB
hard drive setup and not Sage's fault. And it was always just messing
aroun
Here's my $0.02 worth on worksheet management as part of the notebook
interface.
For most new users the notebook is the face of Sage initially. And it
is very impressive. But I worry about users seeing the (very
frustrating) slowdowns that Jason and I experienced after heavy use
(tens or hundre
I think auto_save_interval could refer to worksheets, while
save_interval might refer to nb.sobj. This is part of the problem
here - there are variables, keywords and page headings (via "Settings"
in the notebook) that are vague or misleading, and even my attempt to
add a bit of documentation to
kcrisman,
You've discovered the tangle of tickets on this I alluded to
above. ;-)
1. You can delete all your old snapshots to reclaim disk space (or
relieve quota limits in a shared environment). I used some
incantation with find, xargs, and rm (carefully) which cleared them
out for every wor
Jason,
Have a look at:
http://trac.sagemath.org/sage_trac/ticket/5371
http://trac.sagemath.org/sage_trac/ticket/5459
There are few other tickets about that are relevant, as well.
Rob
On Apr 21, 7:46 pm, Jason Grout wrote:
> I was just troubleshooting why my sage notebook is slowing way down
On Apr 9, 10:23 pm, J Elaych wrote:
> 64bit plugins. I won't use 32bit firefox and Sun only has 64bit
> java applet plugins for Windows, not for linux.
J,
Sun has 64-bit "early-release" Linux x64 binaries at
http://download.java.net/jdk6/index.html
Right now these say "April 2009" in the file
On Apr 9, 9:53 pm, William Stein wrote:
> If you do Data --> Upload File, then upload the file foo.png,
> you can use
Thanks, William. That does the trick.
So after uploading an image, you can just use the TinyMCE image-insert
tool, where all you need to do is put in the file name by itself i
Once in a worksheet, there is a blue "Edit" button near the top, on
the right. Click this and you can type in raw HTML between cells
(which are delimted by triple braces).
The TinyMCE approach works and builds something like:
http://nowhere.com/foto.png"; alt="" />
which you could just type in a
J,
Try reading through this thread
http://groups.google.com/group/sage-support/browse_thread/thread/2de66b2e8298b4a2/c57061d1e6660311
even if it doesn't seem relevant at first. It has some information
about making sure you have the *right* java plugin.
My first post in the thread has a link t
Robert,
I'm not having this problem. 3.4 and Firefox 3.0.5 (ubuntu).
When I double-click to get back into TinyMCE, I do get a small grey
box with "int x dx" (no quotes, no dollar signs) and a small square
that closes the box, overlaid on the editor. I've not not seen that
before, but it goes a
The thread linked to below begins the same way. Maybe it has the
answer you need.
http://groups.google.com/group/sage-support/browse_thread/thread/6fc59581c9ed1af1
On Mar 21, 8:14 am, nerak99 wrote:
> Having played with Sage on a desktop PC I wanted to set it up as a
> school wide service. I
Not
sure what you are up to exactly, but with determinants and
polynomials, perhaps the scaling has a predictable effect. I like the
looks of Mike's suggestion very much, and if this helps you get there,
then I think thousands of 30x30's are achievable.
Rob
On Mar 19, 9:29 pm, Ro
Chris,
I'm having trouble posting a reply here. Here's the essence of what I
wanted to show you. Perhaps more in just a minute.
sage: m=matrix(QQ, [[3/2, 4/3], [1/7, 5/11])
sage: m._clear_denoms()
([693 616]
[ 66 210], 462)
Rob
On Mar 19, 8:13 pm, Mike Hansen wrote:
> On Mar 19, 6:54 pm, C
It's even worse:
sage: G=SymmetricGroup(8)
sage: H=SymmetricGroup(2)
sage: a=H('(1,2)')
sage: b=G('(1,2)(3,4)')
sage: a==b
True
I don't think any interpretation would suggest this behavior as
correct. The problem is that the current compare only runs through
checking equality of the images for
On Mar 14, 11:27 am, mabshoff wrote:
> If there is no binary you need to build from sources.
Giovanni,
My experience is that you should have little difficulty building Sage
from the source on 8.04 (other than having to wait several hours for
the build to finish before you can use it).
Downlo
OK, I have a better, but still imperfect, idea of what is happening.
Discussion below is now at
http://trac.sagemath.org/sage_trac/ticket/5459
(I'm cross-posting the contnuation of this thread from sage-support to
sage-devel).
There is a notebook configuration item indexed by 'save_interval'.
Th
Simon,
For further advice on setting up to test new code, take a look at
http://tinyurl.com/d92o3v
Rob
On Mar 7, 12:10 am, Simon King wrote:
> Hi!
>
> I would like to create an extension class that inherits from
> CommutativeRingElement. In order to learn how it works, I looked at
> the file
On Mar 7, 6:52 pm, William Stein wrote:
> > 4. Worksheet code suggests saves are based on per-user time
> > intervals, but my testing seems to suggest it is a notebook-wide
> > setting that prevails. Consider
>
> > sage: nb = load('/home/rob/.sage/sage_notebook/nb.sobj',
> > compress=False)
> >
John,
Super! Thanks for the information. Yes, maybe I should add something
to the FAQ. Spring break is in a week. ;-)
The JMOL applet for the 3D plots is really powerful. Jason Grout and
I have been passing worksheets back and forth for the multivariate
calculus courses we are teaching and
there
> since the Preferences setting for jave is enabled" and surely there
> are many other web things which would not work without java (gmail for
> a start).
>
> The jmol demo page shows exactly the same message as before.
>
> Never mind,
>
> John
>
> 20
I'd forgotten that about:plugins is so useful.
Do you know the Debian/Ubuntu alternatives scheme? Its a way to
specify a system-wide default editor, etc. See "man update-
alternatives"
On Ubuntu Hardy 8.04 I had to use (as root)
update-alternatives --config xulrunner-1.9-javaplugin.so
Yo
John et al,
I've been doing without JMOL on 64-bit Ubuntu, since Sun had not made
a 64-bit plugin until just recently. VERY inconvenient. ;-) I've
had similar frustrations as John with all sorts of JRE's around/
installed.
However, I got this new plugin installed last night in about 5
minutes
William and Michael,
1. Its not clear from discussion around the topic that user_conf.py
is applicable to newly created notebooks, so that explanation is very
helpful. Thanks.
2. I think it might also be very helpful to have a configurable
maximum number of snapshots - like the configurable
rote:
> On Mar 6, 11:22 pm, Rob Beezer wrote:
>
>
>
> > My 30 MB nb.sobj was also being saved twice a minute. Is this a
> > reasonable size for this file?
>
> > After some head-scratching, I found the threadhttp://tinyurl.com/aht325
>
> > which had the
My 30 MB nb.sobj was also being saved twice a minute. Is this a
reasonable size for this file?
After some head-scratching, I found the thread
http://tinyurl.com/aht325
which had the following commands to use at the sage command line:
sage: nb = load('/home/rob/.sage/sage_notebook/
nb.sobj',com
t; only save once an hour or longer).
>
> -M. Hampton
>
> On Mar 6, 9:23 pm, Rob Beezer wrote:
>
> > I'm finding many, many files in each workseet's "snapshots" directory
> > - many of them identical. They are created about two per minute, even
>
I'm finding many, many files in each workseet's "snapshots" directory
- many of them identical. They are created about two per minute, even
if there are no changes. I have one directory with 15,000 files in
it. This is with 3.4.rc0.
I got the impression that this was partially fixed in
http://
shall Hampton <[EMAIL PROTECTED]> wrote:
>
> > The transformation=True fails even for matrix(QQ,[[0,1,0],[0,0,0],
> > [0,0,0]]). It looks like the algorithm to construct it is flawed, and
> > will not work if there are blocks with the same eigenvalue. Anyone
> > want
I have a 6x6 matrix with integer entries, whose eigenvalues are also
integers. I wanted the Jordan canonical form, and the associated
matrix to make the similarity transformation. The Jordan form comes
out nicely, but I can't get the transformation matrix. I've included
the error output below -
William,
I'm able to convert my open-source linear algebra textbook from LaTeX
to jsMath in an automated way, and you have seen my experiments in
converting snippets of the jsMath versions into SAGE worksheets.
When I attempt to convert the entire book this way, I'd expect each of
the 40 or so s
t; the file coding/binary_code.pyx) reference to a Gap function
> RightTransversal.
>
> John Cremona
>
> 2008/9/24 Carlo Hamalainen <[EMAIL PROTECTED]>:
>
>
>
> > On Wed, Sep 24, 2008 at 7:29 PM, Rob Beezer <[EMAIL PROTECTED]> wrote:
>
> >> A homework ex
A homework exercise for my students asks them to find all subgroups of
S_4, which should be a very instructive exercise, even if a bit
unreasonable. In SAGE, the conjugacy_classes_subgroups() method
gets you started, and the quick-and-dirty brute-force code below
creates all possible subgroups
Thanks, William. Just in time for class this morning. ;-)
Rob
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I'm trying to compute the "product" of a couple of subgroups (the aim
being to build a set that is not a subgroup). My students know the
symmetries of a tetrahedron. Following code results in errors. I can
change the final line to variations that are not useful (like just
printing g and h i
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