I asked Sage to solve the system of the equations:
#
var(pasquare,pbsquare,costhetasquare,Ea,Eb,ma,mb,mc)
assume(Eama)
solution=solve([pasquare*pbsquare*costhetasquare==((-ma^2-mb^2+mc^2)/2
+ Ea*Eb)^2, pasquare==Ea^2-ma^2, pbsquare==Eb^2-
mb^2],pasquare,pbsquare,Eb)
#
But there is the factor
On Feb 18, 4:55 am, Dmitry Shkirmanov piminusme...@bk.ru wrote:
I asked Sage to solve the system of the equations:
#
var(pasquare,pbsquare,costhetasquare,Ea,Eb,ma,mb,mc)
assume(Eama)
solution=solve([pasquare*pbsquare*costhetasquare==((-ma^2-mb^2+mc^2)/2
+ Ea*Eb)^2, pasquare==Ea^2-ma^2,
Hello,
I have a polynomial e(x) of degree 13 with integer (exact)
coefficients and 13 distinct real roots. However Sage only finds 11 of
the roots. Unfortunately the polynomial is enormously long --- 11,755
characters. I'm including it at the end of this email but for the
moment I'll just refer
I was not sufficiently careful in posting my polynomial e(x) and
apparently some bad line breaks and spaces were introduced. This reply
is to post a properly-wrapped copy of the polynomial.
Zach Teitler
594813163982683595176185452130468519129644968918377817372539082858201843
Just for the record. The problem seems to be related to RIF. For the
inexact ring RR, it works:
len(e.roots(ring=RR))
13
len(e.real_roots())
13
numeric approximations of the two missing roots are:
0.953956769342757, 0.957223630414975
This pair of roots is exactly the pair of most close roots
A somewhat simpler test case, which I think preserves the qualitative issue:
sage: from sage.rings.polynomial.real_roots import real_roots
sage:
sage: x = polygen(QQ)
sage: f = 2503841067*x^13 - 15465014877*x^12 + 37514382885*x^11 -
44333754994*x^10 + 24138665092*x^9 - 2059014842*x^8 -
Hi!
I don't know what I did wrong, but apparently I completely destroyed
the reference manual in my copy of Sage. I tried to do sage -docbuild
reference html, but it gave me 810 warnings about non-existing files.
There used to be a devel/sage/doc/en/reference/sage, but now that
folder does not
After you get the output of the solve(), you can simplify() it to send
it back to Maxima, and that might work to get the assumptions
recognized.
I tried it and received wrong answer.
Let's consider for example the code:
#
reset()
forget()
var(a,b,c,d,f)
assume(a-b0)
expr=(a^2-b^2)*f
I also noticed that, sometimes, the incremental document building gets
confused to the point where it falls on its face. Simplest option is to wipe
the doc tree and rebuild the whole documentation.
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Hi Volker,
On 18 Feb., 21:45, Volker Braun vbraun.n...@gmail.com wrote:
I also noticed that, sometimes, the incremental document building gets
confused to the point where it falls on its face. Simplest option is to wipe
the doc tree and rebuild the whole documentation.
How do I wipe the doc
No, delete the output from the doctree. That is, rm -rf doc/output. Then
sage -b sage -docbuild reference html.
Though I didn't quite understand which file you deleted. I don't have a
pushout.rst file anywhere.
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To
If you're really missing files from SAGE_ROOT/devel/sage/doc/en/reference,
then you could just manually copy them from an old installation of Sage
(maybe just copy over the whole directory), or copy them from the main Sage
spkg (sage-4.6.2.spkg), or you could revert those files from a
On 2/17/11 10:09 PM, William Stein wrote:
On Thu, Feb 17, 2011 at 4:24 AM, Pedro Cruzpedrocruzave...@gmail.com wrote:
I'm writting an application were a person develops an algorithm using
the sage notebook (on his computer, for example).
That algorithm will be developed inside a notebook
Hi Volker
On 18 Feb., 22:07, Volker Braun vbraun.n...@gmail.com wrote:
No, delete the output from the doctree. That is, rm -rf doc/output. Then
sage -b sage -docbuild reference html.
I am afraid this did not work. I deleted the output, and even after
sage -ba, sage -docbuild did not do any
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