## Administrator | |
---|---|

member since | 2012-08-21 13:12:26 +0100 |

last seen | 2022-01-23 08:03:32 +0100 |

website | http://carva.org/samuel.lel... |

todays unused votes | 30 votes left |

I'm a mathematician with a strong interest in the SageMath project

In particular I'm part of the admin team for Ask Sage,

our Askbot-powered Q&A site.

My user profile on SageMath's wiki is at

4570

4

- confirmed_bug× 67
- plot× 60
- polynomial× 60
- Jupyter× 59
- installation× 55
- matrix× 53
- symbolic× 50
- python× 50
- algebra× 47
- 2Dplot× 47
- graphics× 43
- solve× 41
- sage× 38
- latex× 37
- EllipticCurve× 37
- graph× 36
- notebook× 35
- cloud.sagemath× 33
- install× 32
- windows× 32
- polynomials× 28
- windows10× 28
- function× 27
- sagemath× 27
- 3D-plots× 27
- mac-OS10.15× 27
- mac× 26
- list× 26
- vector× 25
- finite-fields× 24
- plot3d× 22
- error× 22
- inequalities× 22
- PolynomialRing× 22
- bug× 20
- sets× 20
- sagetex× 20
- cocalc× 20
- ubuntu× 19
- ImportError× 19
- matrices× 19
- integer× 18
- analysis× 18
- linear-algebra× 18
- linear× 17
- complex× 17
- finite-field× 17
- save× 16
- import× 16

● Self-Learner
×
1 ● Student
×
1 ● Nice Question
×
3

● Disciplined × 1 ● Organizer × 1 ● Taxonomist × 1

● Enlightened × 1 ● Critic × 1 ● Good Question × 1

● Necromancer × 33

● Good Answer × 102

● Guru × 3

● Enthusiast × 1

● Scholar × 1 ● Editor × 1 ● Civic Duty × 1

● Popular Question × 8

- How can new users post questions on ask-sage?
- Add a 3d graphics object to a tachyon scene
- Launch Jupyter notebook from Sage?

● Disciplined × 1 ● Organizer × 1 ● Taxonomist × 1

● Enlightened × 1 ● Critic × 1 ● Good Question × 1

● Necromancer × 33

- Accessing cloud via ssh
- question about EllipticCurve("prime_range(100)")
- affine variety
- Sage 5.8 installation on OSX 10.7.x - which binary to install?
- is there group named Shafarevich-Tate group I,II?why Shafarevich-Tate group III is named?
- Partial fraction decomposition over the reals or complex
- Defining Dirichlet series
- Julia and IJulia on Sage Math Cloud
- leading coefficient polynomial
- Error importing ZZ
- A non-web based GUI for SAGE
- "mesh=" juypter vs. -notebook
- latex typesetting for derivatives like g'
- Lazy evaluation of derivatives of an unknown function
- n-th power of matrices
- Simultaneously diagonalizing matrices exactly
- Sagemath on Windows 10?
- Is it possible to update the Sage Python?
- Is it possible to run (may be partially) Sage with Python 3?
- Solving underdetermined system of quadratic equations over GF(2)
- when home/pub can recover?
- no linewidth with parametric plot
- How does one install Sage in windows?
- Polynomial ring modulus integer to univariate polynomial ring over the Integers
- Symbolic product in Sage?
- Is there any way to plot3d latex package on sagemath?
- Animate 3d surface and add some curves ?
- What is the best way to return only real solutions?
- Interact in Jupyterlab vs Jupyter
- Problem evaluating a very tiny integral
- Obtain a particular solution for a system of inequalities whose variables can only take certain values
- A frontend with 2D input and palettes
- SageMath-9.2 does not start with Jupyter on macOS 10.15.7

- IP-Notebooks and extensions, Sage versus Sage Cloud
- How to determine the coefficients of a polynomial when they depend on variables?
- How can I display a polytope in SageMathCloud?
- Syntax error on limit
- when sagecell run show(),the result only above top
- how to get a ideal of Power Series Ring
- what is katsura ideal in Documentation
- Numerical values VS symbolic values ?
- Absolute value of complex numbers in 3D plot
- Problems with Var in Cloud.Sagemath
- Creating new lists from a list of lists
- Please join Sage in Stack Exchange to make it a formal community!
- How does one add new variables to a multivariate polynomial ring?
- Factoring a polynomial over a finite Field
- LaTeX in plot not showing Greek letter
- Sage notebook doesn't work [solved]
- Shapley value calculator
- A problem with changing rings
- Sage ranges in IP-Notebooks on CSM
- what is "....:"?
- Is this a bug in QuadraticForm?
- Computations with complex algebraic numbers?
- Calculating terms of a series
- Cant convert x to integer
- Can't Install R Packages in Sage
- solve with "excess" equations
- affine variety
- Problem using GAP
- Solving logic problems
- Sound, how is it done?
- Sage for physicists
- How to write Buchberger algorithm?
- Hadamard product for the Riemann zeta function
- How reverse a list with Sage?
- is there group named Shafarevich-Tate group I,II?why Shafarevich-Tate group III is named?
- Nice display of a list of "matrices"
- Defining Dirichlet series
- Transferring variables between worksheets?
- Find algebraic solutions to system of polynomial equations
- How can new users post questions on ask-sage?
- How to make "zip" work faster?
- Julia and IJulia on Sage Math Cloud
- Summing primes, cannot convert to int
- Inverses of matrices of Laurent polynomials
- jupyter (ipython notebook) kernel math display
- Publishing a worksheet that uses modules
- Substitution of parameters
- Expanding cos(a*(x+y))
- Can sage help determine if $|f(x) - L| < \epsilon$ is true?
- List of prime factors with repetition
- Can I create a sage file, and import it as a Python module?
- connected graphs
- Installing on Windows 10
- How can I make a python function return a polynomial?
- AttributeError: 'int' object has no attribute 'inverse_mod'
- how to get doc for object methods in sage
- Syntax error with power function
- how to render html or latex tables in jupyter notebook?
- solve((x^3 - 4*x) > 0,x) does not enforce condition assume(x > 0)
- symbolic calculation for resultant
- Nice naming of variables with subscript or superscript, avoiding variable names like phi_jm1_np1 ($\phi_{j-1}^{n+1}$)
- sage vs. python integers and floats in pandas, matplotlib etc.
- Use cumulative distribution functions
- How to add tick marks or control them in the frame of 3d plots?
- groebner_basis() algorithm
- Does Sage have a plain math expression editor, without any calculation performed?
- Importing Python packages into Sage or Vice Versa
- nth root of huge number
- transformation to lines and circles
- Using a python 3 class in SageMath
- Direct product of $S_n$ and $\mathbb Z_m$
- Getting the leading term from random polynomials
- find square root of of an algebraic number
- ideals of a matrix ring
- Partial fraction decomposition over the reals or complex
- Sage Range function
- how to get more information on graphics object
- How to apply a function (like the sum) among all elements of a list?
- the permutation of subscripts of a multivariate polynomial
- matrix with fractional number
- Why is a==b False?
- Error when trying to import without sage.all
- Error importing ZZ
- Limit of a matrix power
- Factorization of $f \in \mathbb{Q}[X]$ in field extension $\mathbb{Q}(\alpha)$.
- How to solve this equation with double square root?
- Why does the code not work?
- A non-web based GUI for SAGE
- receive email if question updated ?
- SageMath as a regular python package
- Converting strings into expressions
- Sage pip not compatible with PyPI
- creating a polynomial ring
- SAGE 8.1, cannot import python modules from notebook
- Using the result of a previously evaluated cell
- VirtualBox running error
- Can Sage run on os x 10.10
- Finding the matrix of a linear affine transformation and its inverse
- How to get a true/false for complex numbers
- Bug in general power of a matrix
- Plotly/Cufflinks and Jupyter Notebooks
- function created in python under sage
- Simultaneously diagonalizing matrices exactly
- How do I plot a real function whose computation involves complex intermediate results?
- Where does save( , '') save to?
- 3D Vector Field Doesn't have Arrows
- Graphics not plotted in same plot?
- What is the significance of "." other than in a file name?
- How to calculate generalized eigenvectors
- 'int' object has no attribute 'is_prime'
- Import Sage Worksheets
- connected sum of knots
- Support for arbitrarily large numbers?
- Variable 't' not found
- Running sage / cocalc
- SageMath Scilab interface not working
- Could anyone explain this unexpected behaviour of the interface?
- Ring conversion, finite to infinite
- Type changing after substitution
- Imaginary part of a ratio of polynomials
- How to find version number of CAS used by sage
- where to report bugs found using systems used by sage?
- Other than "Jupyter Notebook", is there any other way to use Sage?
- make ptest fails after compilation based on Python3
- Differences between Python2 Sagemath and Python3 Sagemath?
- How can I generate a graph from an .mtx file?
- TypeError: unsupported operand type(s) for ** or pow(): 'list' and 'sage.symbolic.expression.Expression'
- Is there a way to use sage-boolean-values in Latex
- Defining a power series with variable coefficients
- does sagemath support fresnels function?
- How to simplify complicated expressions
- Typing in a command of an adding-to-infinity sum
- quick latex question
- What is the exact difference between Sage and Cocalc?
- How can I find the sum of first 20 positive perfect square?
- Scatter Plot is not visible using notebook
- defining boolean variables in sage
- Setting relations between variables
- Python3 MigrationStatus
- Is it possible to update the Sage Python?
- 3D Graph with Domain contours
- Reliable integer root function?
- How to read and run commands from a text file?
- What is meant by "graphics primitive" in the sage documentation?
- How to realize the composition of rational function mappings with Sagemath?
- How to use a software package available for SageMath
- finding general term of a sequence
- Polynomial Ring in Sage
- How can I access the notebook interface using Tails OS ?
- Determining if two subgroups of a symmetric group are conjugate
- Where has _circle_embedding gone?
- Can make doc use less memory?
- Haskel or Dr.Racket
- when home/pub can recover?
- How to display complex numbers with real part before imaginary part?
- Is it possible to remove the latex parentheses from exponential functions?
- CoCal load and commit to github
- Extended Sage examples
- SageMath export to latex Document
- How to get list of relative primes for a given number?
- convert .solve output to function
- Basic integral error
- How to construct the following matrix
- Get output of a .py file in a browser
- Maximize nonlinear function with linear constraints
- Issue Printing Tables in Jupyter Notebook
- loaded file not found
- How can I retrieve sage worksheets from old hard drive
- reverse a matrix
- Legend attached to curve in plot ("PlotLabels")
- Defining family of multivariable polynomials
- Strange matrix product
- How does one install Sage in windows?
- What does the 'a' and x^254 in code means?
- How to print the numeric part of a symbolic expression with arbitrary precision?
- .simplify_full() doesn't simplify an obvious trigonometric expression
- update a value entry following some rule
- How to implement a parallelization?
- Is it possible to run (may be partially) Sage with Python 3?
- Pretty print factorizations as fractions
- jmol cannot run while plot3d
- Creating a module in Sage
- Compute the square root of a complex matrix
- "mesh=" juypter vs. -notebook
- graphs of order n
- Import sage in python3
- donation button on Sagemath.org ?
- how to add julia sage notebook?
- Keeping zeros after matrix multiplication
- symbolic differentiation of unknown function
- Binary relations
- quick beginner question
- Partially commutative monoid of a graph
- Define a graph
- Symbolic product in Sage?
- Equation problem
- In Sage is there support for non-convex polyhedra?
- How to correctly plot x^(1/3)
- There is a way to forget the history of the prompt?
- SSL error using sage -pip install to download a package
- SageTeX: formatting matrices
- How allow renaming SageMath-x.y.app to SageMath.app for sagetex
- Installing packages using pip for Sage installed via apt
- start sage
- Sage on Windows 10 becomes corrupt
- How to remove EOL characters from imported literal strings?
- SageMath on macOS: app, components, packages, SageTeX
- Outputting SVG source of a plot
- Can't do simple algebraic division
- Sage fails to recognize `1 + (1/2 + i*sqrt(3)/2)^3` is zero
- how to evaluate a polynomial in a quotient ring ?
- may an object in sage lose its type in a method within a class ?
- In Sage Notebook, does sage compile all programs in a cell ?
- Stack overflow during symbolic manipulations
- Equality of algebraic numbers given by huge symbolic expressions
- unavailable link
- Prevent sage from calculating a function?
- sage terms not defined on import
- Extracting terms of polynomial of certain powers
- Time/Space Requirements of Graph.spanning_trees()
- Imaginary result for cube root of -1
- Get the error "NameError: name '_interact_' is not defined" when run sagenb.
- Sagecells linked cells
- Sage very slow until restarting the session
- defining a translation surface
- What is the best way to return only real solutions?
- Translating GAP-output into sage for lattices
- Sage upgrade from 5.11 (RedHat Server)
- Interact in Jupyterlab vs Jupyter
- Apply modulus to polynomial coefficients
- Pip ssl errors
- Plot ratio of Bessel functions
- Some 2-d plot questions
- Filling a hyperbolic polygon
- Is it possible to substitute $U^\prime$ to $D_0(U)$ ?
- What is wrong with the syntax?
- How to substitute an equation into another equation to simplify it?
- substitute_function when function is a diff ?
- How to do quantum mechanics integrals in Sage?
- How to create GF(2^8) and multiply by 8 by 8 matrix?
- Graphs on 6 vertices with eigenvalue condition
- Translating a GAP-output for Sage
- Pretty print derivative in Newton notation with dot?
- Simplify expression with root
- Line break in latex output makes it read wrong
- how to fill region with color
- How to do low degree computation in a Free Algebra ?
- Polyhedra, facets and vertices
- Computing dimensions
- No Docker Image Tag 9.2?
- Installing and running JupyterLab for SageMath in Windows
- how to use sage on mac with big sur
- difference Python and Sage - integer and rational number
- Pan and zoom in plot 2D
- How to check if a graph has a given subgraph?
- Why does Sage use its own build of Python interpreter
- LaTeX Greek names for symbolic variables
- Automatically adding colors to multiple list_plot graphics
- Is it possible to extend the latin alphabet to AA, AB, AC....
- Generate certain number of planar graphs with graphs.planar_graphs?
- how to move from notebook() to jupyter
- Plot "color_by_label" produces SQUARED number of lines in digraph
- Splitting a matrix
- Obtaining a RealNumber in Python
- How to find the degree of a polynomial
- Evaluating a form field at a point on vectors
- Issue with inversion of complex symbolic array initialized with numpy
- How do you check if a lattice contains a coordinate?
- Geometry math
- Could we have a leaf_count() function in base sagemath?
- some output from integrate using giac gives Malformed expression
- plot not working in windows
- Unable to install PyNormaliz
- Problem by finding an integral
- How to use prime_range with a formula instead of an integer
- How to zoom in on saved plot?
- Where to find older version documentation?
- Best way to report install bugs?
- Series Reversion
- I can't use pip to add a python toolbox due to the mac openSSL problem. What is the current best work around?
- cannot convert log(x)/log(2) to int
- How to change the unreadable dark blue colour in the SageMath command line window under Windows-10?
- Why am I getting a different solution on SageMath for an ODE compared to when I work it by hand?
- Testing whether a list of permutations avoids two permutations
- How to reduce a list of fractions
- entering permutation as product of not necessarily disjoint cycles
- Change of variables in symbolic computation
- ymin and ymax not working
- Tree database
- import txt file contents to SageMath/Python
- How can I plot two parametric functions in a common coordinate system?
- How can I easily create and handle polynomials with symbolic coefficients?
- Implicit Differentiation help?
- Coefficients of polynomial of fixed degree

● Good Answer × 102

- Sage ranges in IP-Notebooks on CSM
- IP-Notebooks and extensions, Sage versus Sage Cloud
- Numerical values VS symbolic values ?
- Defining Dirichlet series
- Nice display of a list of "matrices"
- How does one add new variables to a multivariate polynomial ring?
- Please join Sage in Stack Exchange to make it a formal community!
- LaTeX in plot not showing Greek letter
- Calculating terms of a series
- Sage for physicists
- How can new users post questions on ask-sage?
- How to make "zip" work faster?
- Publishing a worksheet that uses modules
- Expanding cos(a*(x+y))
- List of prime factors with repetition
- Factoring a polynomial over a finite Field
- Can I create a sage file, and import it as a Python module?
- Syntax error with power function
- solve((x^3 - 4*x) > 0,x) does not enforce condition assume(x > 0)
- How to add tick marks or control them in the frame of 3d plots?
- Does Sage have a plain math expression editor, without any calculation performed?
- Importing Python packages into Sage or Vice Versa
- Using a python 3 class in SageMath
- Getting the leading term from random polynomials
- find square root of of an algebraic number
- Find algebraic solutions to system of polynomial equations
- sage vs. python integers and floats in pandas, matplotlib etc.
- Partial fraction decomposition over the reals or complex
- Sage Range function
- Installing on Windows 10
- how to get more information on graphics object
- How to apply a function (like the sum) among all elements of a list?
- Why is a==b False?
- Limit of a matrix power
- A non-web based GUI for SAGE
- receive email if question updated ?
- Bug in general power of a matrix
- Finding the matrix of a linear affine transformation and its inverse
- Plotly/Cufflinks and Jupyter Notebooks
- Where does save( , '') save to?
- Simultaneously diagonalizing matrices exactly
- Graphics not plotted in same plot?
- What is the significance of "." other than in a file name?
- 'int' object has no attribute 'is_prime'
- How to calculate generalized eigenvectors
- Running sage / cocalc
- Could anyone explain this unexpected behaviour of the interface?
- where to report bugs found using systems used by sage?
- Differences between Python2 Sagemath and Python3 Sagemath?
- Other than "Jupyter Notebook", is there any other way to use Sage?
- How can I generate a graph from an .mtx file?
- TypeError: unsupported operand type(s) for ** or pow(): 'list' and 'sage.symbolic.expression.Expression'
- Is there a way to use sage-boolean-values in Latex
- Defining a power series with variable coefficients
- does sagemath support fresnels function?
- How to simplify complicated expressions
- What is the exact difference between Sage and Cocalc?
- Scatter Plot is not visible using notebook
- defining boolean variables in sage
- Sage pip not compatible with PyPI
- What is meant by "graphics primitive" in the sage documentation?
- Cant convert x to integer
- 3D Graph with Domain contours
- Inverses of matrices of Laurent polynomials
- How to construct the following matrix
- Get output of a .py file in a browser
- Legend attached to curve in plot ("PlotLabels")
- Strange matrix product
- update a value entry following some rule
- Is it possible to update the Sage Python?
- Is it possible to run (may be partially) Sage with Python 3?
- Creating a module in Sage
- Compute the square root of a complex matrix
- Import sage in python3
- jmol cannot run while plot3d
- In Sage is there support for non-convex polyhedra?
- SSL error using sage -pip install to download a package
- SageTeX: formatting matrices
- In Sage Notebook, does sage compile all programs in a cell ?
- Time/Space Requirements of Graph.spanning_trees()
- Plot ratio of Bessel functions
- donation button on Sagemath.org ?
- Filling a hyperbolic polygon
- How to substitute an equation into another equation to simplify it?
- How to do quantum mechanics integrals in Sage?
- Is it possible to substitute $U^\prime$ to $D_0(U)$ ?
- Line break in latex output makes it read wrong
- Computing dimensions
- Interact in Jupyterlab vs Jupyter
- difference Python and Sage - integer and rational number
- Pan and zoom in plot 2D
- Automatically adding colors to multiple list_plot graphics
- Geometry math
- some output from integrate using giac gives Malformed expression
- Could we have a leaf_count() function in base sagemath?
- cannot convert log(x)/log(2) to int
- SageMath export to latex Document
- How to reduce a list of fractions
- How to change the unreadable dark blue colour in the SageMath command line window under Windows-10?
- Installing packages using pip for Sage installed via apt
- Sound, how is it done?
- import txt file contents to SageMath/Python

- How can new users post questions on ask-sage?
- Launch Jupyter notebook from Sage?
- how to create directory named s where s is a string ('mkdir s' will create directory 's')
- Install optional packages (eg extra Jupyter kernels) on top of conda-installed SageMath

● Guru × 3

- What is the exact difference between Sage and Cocalc?
- SSL error using sage -pip install to download a package
- LaTeX in plot not showing Greek letter

- Launch Jupyter notebook from Sage?
- how to create directory named s where s is a string ('mkdir s' will create directory 's')
- Install optional packages (eg extra Jupyter kernels) on top of conda-installed SageMath

● Enthusiast × 1

- Importing Python packages into Sage or Vice Versa
- does sagemath support fresnels function?
- What is the exact difference between Sage and Cocalc?
- Can I create a sage file, and import it as a Python module?
- defining boolean variables in sage
- Other than "Jupyter Notebook", is there any other way to use Sage?
- Creating a module in Sage
- Is it possible to run (may be partially) Sage with Python 3?
- In Sage is there support for non-convex polyhedra?
- Filling a hyperbolic polygon
- SSL error using sage -pip install to download a package
- Import sage in python3
- LaTeX in plot not showing Greek letter

● Scholar × 1 ● Editor × 1 ● Civic Duty × 1

● Popular Question × 8

- How can new users post questions on ask-sage?
- Launch Jupyter notebook from Sage?
- how to create directory named s where s is a string ('mkdir s' will create directory 's')
- Install optional packages (eg extra Jupyter kernels) on top of conda-installed SageMath
- Add a 3d graphics object to a tachyon scene
- Plot boxes have jumpy xy ranges in log scale
- Permutations indexed from zero
- Jumping from tex to preview and back on SageMathCloud

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