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eric_g's profile - overview
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karma
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Administrator
real name
Eric Gourgoulhon
member since
2015-03-22 22:52:45 +0100
last seen
2024-12-22 17:28:00 +0100
website
https://luth.obspm.fr/~luth...
location
Meudon, France,
todays unused votes
30
votes left
0
Questions
409
Answers
11
div, grad and curl once again
10
Good(new 2017+) Book/Tutorial
7
How to create/use matrices valued in differential forms?
6
Coefficients of partial derivatives
5
.canonicalize_radical() produces incorrect result
5
3D Vector Field Doesn't have Arrows
4
Can declare symbolic variable with specific type?
4
simplify_full() does not simplify
4
Source for Principal Null Directions Kerr, Example Worksheet
4
Bipolar coordinate system
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17
Badges
●
Guru
×
4
Good(new 2017+) Book/Tutorial
div, grad and curl once again
.canonicalize_radical() produces incorrect result
How to create/use matrices valued in differential forms?
●
Necromancer
×
7
Why `unable to convert (sin(h(x)), cos(h(x))) to a symbolic expression`?
Size of Labels on a Plot
Coordinate Transforms
Make ipython notebook world-viewable?
In-line graphics for Sage in ipython notebook?
How could I notice that a SAGE program is running?
Quaternions Missing Important Functionality?
●
Teacher
×
1
Set LaTeX fontsize in labels?
●
Critic
×
1
use while loop to check a number is prime or not
●
Enlightened
×
1
What to do for using the IPython notebook?
●
Supporter
×
1
3D grid like the one in the picture
●
Editor
×
1
Sage fails to evaluate this expression.
●
Associate Editor
×
1
Covariant Derivative gives Error, why? (SAGE 7.5.1)
●
Taxonomist
×
1
●
Nice Answer
×
162
In-line graphics for Sage in ipython notebook?
Can we symbolically derive geodesic equation for a given metric using its Christoffel symbols?
Unable to locate package Sagemath
How to calculate rotation and spin coefficients of tetrads in SageMath?
How to define a generic function of two variable t and r
name 'Graph' is not defined
Confused about covariant derivatives and tensors in SageMath
Computing the Chern–Pontryagin invariant
Real and imaginary part of an expression with assumptions on variables
Covariant derivative
How can I check for the new functions in sage 10.1?
Cannot start jupyterlab notebook
Why does sage fail to detect the symmetry here?
@Parallel - how to use all CPUs
What functionality from SymPy is incorporated in Sage
R_{ab} = T_{ba} and so on
tick formatter pi cause the plot of squared sine function to have long tick label
Sage doesn't support completely modern string formatting
LCM of 3 polynomials
Sagemath installation with apt package manager installs outdated version
SageMath installation failed in Ubuntu 20.04
controling ticks using graphics_array using sage 8.4 (ubuntu 18.04)
Redefine symbolic function even in derivatives
Can declare symbolic variable with specific type?
Computing gradients of vector fields?
Using dz /\ dx convention in SageManifolds
show command latex
Add legend to implicit_plot for different parameter values
Is there a way to define a submanifold of a Euclidean space by providing a list of implicit constraints, instead of by declaring a separate manifold and explicitly defining the embedding?
Contraction of Levi-Civita Symbols
Restriction of domain of vector field
Several charts at top create trouble with submanifolds
Working with tetrads and the spin connection
Integrating differential forms
Differential forms on non-standard spherical coordinates
Set LaTeX fontsize in labels?
Sage fails to evaluate this expression.
Dot-angle syntax
Is there some import I need to do for defining variables?
Size of Labels on a Plot
What to do for using the IPython notebook?
falling_factorial produces AttributeError
Summation in a range
Using interact
Can I alias a sage command?
derivative of order var('m') returns 0
how to produce graphics from cli
Error in rising_factorial
Symbolic vector field
Axes labels on 3D plots?
Derivation of a sagemanifold vector (possible bug)
Sage manifold error
Using differential forms---within SageManifolds
Coordinate Transforms
How to include PDF image from Sage into LaTeX document (scale issue)?
What's this result of equation solving?
Parametric plot with piecewise input
Make ipython notebook world-viewable?
Why use symbolic functions?
how to simplify differential form
help on using chain rule in Sage
Trigonometric equality (with arctan and arcsin)
[RESOLVED]Use sage objects in python module files
Is it possible to define (or assume) the derivative of a function
Computing Riemann connection fails in Maxima
Better implementation for Laplace-Beltrami operator
integrate x^3/(exp(x)-1) between 0 and infinity
ode and piecewise function
How does sagemath modify python?
Should I / how should I make an optional sage package?
jupyter interface vs. sagenb
Infinite initial conditions in ODE and arbitrary constant
Sage pip not compatible with PyPI
make doc-pdf fails (sage 8.0/ubuntu 16.04)
Project defined functions
Name of this project: Sage or Sagemath?
No tick marks
Render Latex in IPython notebook and display on output line
Good(new 2017+) Book/Tutorial
Potential from an exact differential form
how to define the codomain of a symbolic function
Numerical Integral with variable params
div, grad and curl once again
Create multivariate function of a list of variables
tab completion observation
How to calculate Work from Potential
best way to convert many notebooks from sagenb to jupyter?
3D Vector Field Doesn't have Arrows
viewer 3D problem
Can this fraction be simplified ?
Alternating symbols with SageManifolds
Curl in 2D Manifolds
Sum using coefficients of a expansion
About SymmetricGroupRepresentation()
how to run maxima code in Sage?
make ptest fails after compilation based on Python3
Another problem simplifying symbolic trigonometric expressions
R-module/algebra valued differential forms
what instance is integral from?
Typing in a command of an adding-to-infinity sum
Quaternions Missing Important Functionality?
Running Sagemath 8.2 natively in Windows, how to change the Jupyter default directory?
Python 3 print in Sage
show(LatexExpr(" \frac{x}{\cos(x)}")) need 2 \\
How to edit pixel values of color image in SageMath?
How to convert an integer to fixed length binary string in Sage?
Cannot get threejs rendering to work on MacOS
How to realize the composition of rational function mappings with Sagemath?
integration - StopIntegration support?
SageManifolds different frames
.canonicalize_radical() produces incorrect result
Sagemanifold - Connection components from a tensor (not a metric)
Redefine Method in Sage class
jupyter tutorial
Wrong factorization of expressions containing exponentials ?
Solved: Why does integrate(psi(y)*f(y),y) return an error but integrate(psi(t,y)*f(t,y),y) works?
Coefficients of partial derivatives
grad() at glacial speed
Is SageManifolds adequate to work with homogeneous Riemannian manifolds?
Differential forms best package
Arrow length goes wild near poles in vector field plot
Bipolar coordinate system
tangent space vector mapping
set_default_chart seems to fail
How to create/use matrices valued in differential forms?
How to grab the 'function' part of a differential form?
Trouble with spherical coordinates in sagemanifolds
How to define multiple objects with a for loop?
Opening "old" Sage Notebooks in Jupyter: not UTF-8 encoded
SageManifolds: Equations of motion for scalar field
Source for Principal Null Directions Kerr, Example Worksheet
Setting the components of a differential form systematically.
Changing chart multiple times in sagemanifolds
Error computing curvature of graph submanifold
Interactive linear programming
Check if a curve is a geodesic
Display connection coefficients under a change of chart
How to transform fxy.solve(y) into function I can plot?
How can I get the Sage version 9 on ubuntu?
Working with units
gen_lengendre_p bug
Getting LaTeX code from Sage when running %display latex
PEMDAS unexpected result
Index notation
metric perturbations on Sagemanifolds
abstract index notation and differential geometry
Installing packages using pip for Sage installed via apt
simplify_full() does not simplify
Substituting variable/function
Sagemanifolds display has deteriorated
When affine_connection is empty
Tangent vector field
Latex (?)--Riemann tensor overflow
Pullback computation hanging
Coordinate for legend_label
metric to christoffel symbols yielding overflow
how to join functions with an intermediate fit to obtain smooth derivatives
Extrinsic curvature of Riemannian submanifold: no basis found for computing the components
Substitute a function in a formal derivative
Quickly recalling the definition of a temporary function to make minor edits?
Formula manipulation
Can Sage verify (some) hyperbolic identities?
●
Good Answer
×
51
How to calculate rotation and spin coefficients of tetrads in SageMath?
Real and imaginary part of an expression with assumptions on variables
How can I check for the new functions in sage 10.1?
Cannot start jupyterlab notebook
Getting LaTeX code from Sage when running %display latex
Size of Labels on a Plot
Redefine symbolic function even in derivatives
SageMath installation failed in Ubuntu 20.04
Can declare symbolic variable with specific type?
Integrating differential forms
gen_lengendre_p bug
how to define the codomain of a symbolic function
What to do for using the IPython notebook?
Summation in a range
Axes labels on 3D plots?
Using interact
Parametric plot with piecewise input
help on using chain rule in Sage
Trigonometric equality (with arctan and arcsin)
how to produce graphics from cli
Should I / how should I make an optional sage package?
Good(new 2017+) Book/Tutorial
div, grad and curl once again
Create multivariate function of a list of variables
3D Vector Field Doesn't have Arrows
Can this fraction be simplified ?
Sum using coefficients of a expansion
Potential from an exact differential form
make ptest fails after compilation based on Python3
Curl in 2D Manifolds
Typing in a command of an adding-to-infinity sum
.canonicalize_radical() produces incorrect result
show(LatexExpr(" \frac{x}{\cos(x)}")) need 2 \\
Is it possible to define (or assume) the derivative of a function
Can I alias a sage command?
Coefficients of partial derivatives
Better implementation for Laplace-Beltrami operator
Arrow length goes wild near poles in vector field plot
Bipolar coordinate system
Alternating symbols with SageManifolds
How to create/use matrices valued in differential forms?
How to grab the 'function' part of a differential form?
How to define multiple objects with a for loop?
Trouble with spherical coordinates in sagemanifolds
Source for Principal Null Directions Kerr, Example Worksheet
simplify_full() does not simplify
Render Latex in IPython notebook and display on output line
When affine_connection is empty
Extrinsic curvature of Riemannian submanifold: no basis found for computing the components
falling_factorial produces AttributeError
Formula manipulation
●
Great Answer
×
6
Good(new 2017+) Book/Tutorial
div, grad and curl once again
3D Vector Field Doesn't have Arrows
.canonicalize_radical() produces incorrect result
Coefficients of partial derivatives
How to create/use matrices valued in differential forms?
●
Autobiographer
×
1
●
Organizer
×
1
worksheets inaccessible in 7.3 after attempt to upgrade to Jupytern
●
Enthusiast
×
1
●
Civic Duty
×
1
complex exponential/trigonometric
●
Commentator
×
1
can sage be made to do this algebra?
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