czsan's profile - activity

I'm using arch linux (antergos), and there are some packages for sagemath in this distro. If I type in firefox: localhost:8080, then it opens the notebook, but previously it needs to reset the admin password.

I try to run sage: notebook(), or some other notebook with name between the parenthesis, but I get the nessage 'Could not find the Mozilla runtime' and Sage stops.

What is the solution? sagemath is v7.3.5 sage-notebook is v0.13.3

I'm using the Firefox web browser, v49.0.1

The respone is u'g\xf6mb\xf6c'

How can I chgange characte encoding in Sage notebook. I'm hungarian, and in string I need characterd like á, ő, ű, etc, but not \xc3, \xc5 and so on.

I think it is not true; I newly installed arch linux on two machine (Antergos distro), the problem is same.

Yes, they are installed. I found, that this is not ubuntu problem, the effect is same on arch linux.

On ubuntu (versions from 12.04 to 14.04) I got the following error, when I started the notebook server with secure=True parameter:

RuntimeError Traceback (most recent call last) <ipython-input-3-3d6cf59ae321> in <module>() ----> 1 notebook(secure=True)

/usr/lib/sagemath/local/lib/python2.7/site-packages/sage/misc/lazy_import.so in sage.misc.lazy_import.LazyImport.__call__ (build/cythonized/sage/misc/lazy_import.c:3000)()

/usr/lib/sagemath/local/lib/python2.7/site-packages/sagenb-0.10.8.2-py2.7.egg/sagenb/notebook/notebook_object.py in __call__(self, args, *kwds) 226 """ 227 def __call__(self, args, *kwds): --> 228 return self.notebook(args, *kwds) 229 230 notebook = run_notebook.notebook_run

/usr/lib/sagemath/local/lib/python2.7/site-packages/sagenb-0.10.8.2-py2.7.egg/sagenb/notebook/run_notebook.py in notebook_run(self, directory, port, interface, port_tries, secure, reset, accounts, openid, server_pool, ulimit, timeout, doc_timeout, upload, automatic_login, start_path, fork, quiet, server, profile, subnets, require_login, open_viewer, address) 475 import OpenSSL 476 except ImportError: --> 477 raise RuntimeError("HTTPS cannot be used without pyOpenSSL" 478 " installed. See the Sage README for more information.") 479

RuntimeError: HTTPS cannot be used without pyOpenSSL installed. See the Sage README for more information.

SOme remarks: First: this server was a live ~6.1* server using secure=True parameter (we used it over https). After some updating of ubuntu it crashed. Second: Since this accident I tried some new versions of Ubuntu and later versions of Sage, but the error remain same. Third: otherwise the program runs - yet the notebook server too (without SSL)

yes, i mean that

I'm maintaning a Sage server in my campus. How can I backup all content of the server, then restore in another maschine?

Is there a method to solve the equation x + x^(1/3) == -2 ?

The PPA for Sage 6.1.1 is now ready thanks to Jan Groenewald, see this post on the sage-release mailing list.

It is a regular error in marriage of Ubuntu and Sage. It is very unpleasant, because Ubuntu and its forks are the far common linux distros. I'm very upset, because this problem causes in addition a failure in source repository.

So, it is not true

5 minutes ago

installArchives() failed: Setting up sagemath-upstream-binary (6.1.1ubuntu1) ... Running Sage once as root to set paths /var/lib/dpkg/info/sagemath-upstream-binary.postinst: 42: /var/lib/dpkg/info/sagemath-upstream-binary.postinst: /usr/bin/sage: not found dpkg: error processing sagemath-upstream-binary (--configure): subprocess installed post-installation script returned error exit status 127 No apport report written because MaxReports is reached already Errors were encountered while processing: sagemath-upstream-binary Setting up sagemath-upstream-binary (6.1.1ubuntu1) ... Running Sage once as root to set paths /var/lib/dpkg/info/sagemath-upstream-binary.postinst: 42: /var/lib/dpkg/info/sagemath-upstream-binary.postinst: /usr/bin/sage: not found dpkg: error processing sagemath-upstream

installArchives() failed: Setting up sagemath-upstream-binary (6.1.1ubuntu1) ... Running Sage once as root to set paths /var/lib/dpkg/info/sagemath-upstream-binary.postinst: 42: /var/lib/dpkg/info/sagemath-upstream-binary.postinst: /usr/bin/sage: not found dpkg: error processing sagemath-upstream-binary (--configure): subprocess installed post-installation script returned error exit status 127 No apport report written because MaxReports is reached already Errors were encountered while processing: sagemath-upstream-binary Setting up sagemath-upstream-binary (6.1.1ubuntu1) ... Running Sage once as root to set paths /var/lib/dpkg/info/sagemath-upstream-binary.postinst: 42: /var/lib/dpkg/info/sagemath-upstream-binary.postinst: /usr/bin/sage: not found dpkg: error processing sagemath-upstream

I'm using Ubuntu 12.04. After automatic system update the sagemath-upstream-binary vanishes and does not possible to install from ppa. (v 6.1.1)

var('y')
P = x^18
eqn = x^2 == y + 1
soln = solve(eqn,x)
P = P.subs(x=soln[0].rhs())
P.expand().subs(y=x)

For example, if P = x^17 = x^16*x=(x^2)^4*x=(x+1)^4*x. But it is impossible with this method.

It works only for even powers.

How can I imitate the algsubs function of Maple? A little example:

p = x^18

algsubs(x^2=x+1,p)

The reult in Maple is:

x^9+9x^8+36x^7+84x^6+126x^5+126x^4+84x^3+36x^2+9x+1.

it seems, in my problem the following works:

[F[i].function(x) for i in range(len(F))]

How can I generate a list (or array) of functions? I have a list which contains the expressions for the functions. For example: F = [x, x^2, (x-1)/x, -1/x] and I want f1(x) = F[1] f2(x) = F[2],... (In Maple there is an indexed function construction) Thanks

How can I generate a lot of new accounts (the admin interface is too slow for). And how can I delete them?