I installed the sagemath software on an ubuntu machine and nothing executes. I type
sage: notebook()
NameError: name 'notebook' is not defined
sage: 2+3
---------------------------------------------------------------------------
NameError Traceback (most recent call last)
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/bin/<ipython console> in <module>()
NameError: name 'Integer' is not defined
On opening sage I get the following message
----------------------------------------------------------------------
| Sage Version 4.7, Release Date: 2011-05-23 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/IPython/ipmaker.pyc in force_import(modname)
64 reload(sys.modules[modname])
65 else:
---> 66 __import__(modname)
67
68
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/bin/ipy_profile_sage.py in <module>()
5 preparser(True)
6
----> 7 import sage.all_cmdline
8 sage.all_cmdline._init_cmdline(globals())
9
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/all_cmdline.py in <module>()
12 try:
13
---> 14 from sage.all import *
15 from sage.calculus.predefined import x
16 preparser(on=True)
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/all.py in <module>()
89 from sage.algebras.all import *
90 from sage.modular.all import *
---> 91 from sage.schemes.all import *
92 from sage.graphs.all import *
93 from sage.groups.all import *
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/schemes/all.py in <module>()
23 from jacobians.all import *
24
---> 25 from hyperelliptic_curves.all import *
26
27 from plane_curves.all import *
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/schemes/hyperelliptic_curves/all.py in <module>()
----> 1
2
3 from constructor import HyperellipticCurve
4 from hyperelliptic_generic import is_HyperellipticCurve
5 from kummer_surface import KummerSurface
6 from invariants import (igusa_clebsch_invariants,
7 absolute_igusa_invariants_kohel,
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/schemes/hyperelliptic_curves/constructor.py in <module>()
9 #*****************************************************************************
10
---> 11 from sage.schemes.generic.all import ProjectiveSpace
12
13 from hyperelliptic_generic import HyperellipticCurve_generic
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/schemes/generic/all.py in <module>()
2
3 from spec import Spec, is_Spec
----> 4 from affine_space import AffineSpace, is_AffineSpace
5 from algebraic_scheme import is_AlgebraicScheme
6 from ambient_space import is_AmbientSpace
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/schemes/generic/affine_space.pyc in <module>()
22 from sage.misc.all import latex
23
---> 24 import algebraic_scheme
25
26 import ambient_space
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/schemes/generic/algebraic_scheme.pyc in <module>()
141 import affine_space
142 import projective_space
--> 143 import toric_variety
144 import morphism
145 import scheme
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/schemes/generic/toric_variety.py in <module>()
234 import sys
235
--> 236 from sage.geometry.cone import Cone, is_Cone
237 from sage.geometry.fan import Fan
238 from sage.matrix.all import matrix
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/geometry/cone.py in <module>()
173
174 from sage.combinat.posets.posets import FinitePoset
--> 175 from sage.geometry.lattice_polytope import LatticePolytope
176 from sage.geometry.polyhedra import Polyhedron, Hasse_diagram_from_incidences
177 from sage.geometry.toric_lattice import ToricLattice, is_ToricLattice
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/geometry/lattice_polytope.py in <module>()
110 from sage.plot.plot import hue
111 from sage.plot.plot3d.index_face_set import IndexFaceSet
--> 112 from sage.plot.plot3d.all import line3d, point3d
113 from sage.plot.plot3d.shapes2 import text3d
114 from sage.plot.plot3d.tachyon import Tachyon
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/plot/plot3d/all.py in <module>()
3 from parametric_plot3d import parametric_plot3d
4 from plot_field3d import plot_vector_field3d
----> 5 from implicit_plot3d import implicit_plot3d
6 from list_plot3d import list_plot3d
7 from revolution_plot3d import revolution_plot3d
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/sage/plot/plot3d/implicit_plot3d.py in <module>()
3 """
4
----> 5 from implicit_surface import ImplicitSurface
6
7 def implicit_plot3d(f, xrange, yrange, zrange, **kwds):
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/bin/numpy.pxd in init sage.plot.plot3d.implicit_surface (sage/plot/plot3d/implicit_surface.c:29094)()
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/numpy/__init__.pyc in <module>()
134 return loader(*packages, **options)
135
--> 136 import add_newdocs
137 __all__ = ['add_newdocs']
138
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/numpy/add_newdocs.py in <module>()
7 # core/fromnumeric.py, core/defmatrix.py up-to-date.
8
----> 9 from numpy.lib import add_newdoc
10
11 ###############################################################################
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/numpy/lib/__init__.py in <module>()
11
12 import scimath as emath
---> 13 from polynomial import *
14 #import convertcode
15 from utils import *
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/numpy/lib/polynomial.py in <module>()
15 from numpy.lib.function_base import trim_zeros, sort_complex
16 from numpy.lib.type_check import iscomplex, real, imag
---> 17 from numpy.linalg import eigvals, lstsq
18
19 class RankWarning(UserWarning):
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/numpy/linalg/__init__.py in <module>()
46 from info import __doc__
47
---> 48 from linalg import *
49
50 from numpy.testing import Tester
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/lib/python2.6/site-packages/numpy/linalg/linalg.py in <module>()
21 isfinite, size, finfo, absolute, log, exp
22 from numpy.lib import triu
---> 23 from numpy.linalg import lapack_lite
24 from numpy.matrixlib.defmatrix import matrix_power
25 from numpy.compat import asbytes
ImportError: libgfortran.so.3: cannot open shared object file: No such file or directory
Error importing ipy_profile_sage - perhaps you should run %upgrade?
WARNING: Loading of ipy_profile_sage failed.
sage: notebook()
---------------------------------------------------------------------------
NameError Traceback (most recent call last)
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/bin/<ipython console> in <module>()
NameError: name 'notebook' is not defined
sage: notebook()
---------------------------------------------------------------------------
NameError Traceback (most recent call last)
/home/myusername/Downloads/sage-4.7-linux-32bit-ubuntu_10.04_lts-i686-Linux/local/bin/<ipython console> in <module>()
I think the line
is the source of the problem. That error message seemed familiar, and I thought I’d seen it relatively recently: turns out that I was right, it was on a sage-support thread.. Try installing gfortran.
On Ubuntu: