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

real name | Karl-Dieter Crisman |

member since | 2010-08-19 11:10:04 +0200 |

last seen | 2020-08-07 15:30:11 +0200 |

location | |

todays unused votes | 30 votes left |

I use, teach with, and help develop Sage. I am especially interested in helping other faculty (and people) learn how to use Sage more effectively, which explains my interest in this site.

1863

11

- notebook× 234
- plot× 169
- symbolic× 113
- sage× 109
- solve× 95
- matrix× 82
- function× 77
- latex× 70
- R× 67
- confirmed_bug× 67
- graphics× 62
- sagetex× 54
- install× 53
- simplify× 49
- python× 48
- plotting× 48
- installation× 47
- numerical× 46
- maxima× 45
- interact× 43
- fixed_bug× 43
- variable× 42
- complex× 41
- matplotlib× 40
- integral× 39
- polynomial× 38
- equation× 37
- error× 36
- graph× 34
- server× 33
- mac× 33
- piecewise× 32
- cloud.sagemath× 32
- worksheet× 31
- integration× 30
- meta× 29
- mathematica× 28
- substitution× 27
- list× 27
- bug× 26
- sagenb× 26
- expression× 25
- sagecell× 25
- jmol× 24
- calculus× 23
- windows× 23
- assume× 23
- import× 23
- print× 23
- graph_theory× 23

● Famous Question
×
12

● Supporter × 1

● Commentator × 1 ● Enlightened × 1 ● Scholar × 1

● Nice Question × 8

● Organizer × 1 ● Favorite Question × 1 ● Necromancer × 9

● Notable Question × 20

● Guru × 10

● Popular Question × 25

● Good Question × 5

- When would sage -sh not work?
- Defining Dirichlet series
- Python thing that doesn't work in Sage, works in pure Python
- Getting a rooted graph from a nested list of lists
- Convert from int to double and back in Cython
- Using @parallel in creating a list
- Solve very simple linear program
- Sage cell server - do I really need so many makeSagecell invocations?
- How do do more complex shell commands in Sage?
- Plot graph by distance from a given vertex
- How to magically define variables and use functional notation instead of methods
- How do I get output from sage -c ?

● Supporter × 1

- Creating a polynomial ring where the variables are code generated
- How can one use maxima kummer confluent functions in sage
- how to use the function ord()?
- Sharing Sage on the Web
- Navigating autocompletion list
- What tests are useful while reviewing a patch if the patchbot report is already positive?
- Abstract Algebra Question
- Simplify, Solve Equation and use solution
- Is it possible to run over the isomorphism classes of groups?
- Prevent sage from simplifying
- get_minmax_data on implicit_plot
- Plotting x, free variable error
- arctan of infinity is undefined
- How-to: (Linear ...) regression in Sage
- notebook questions
- Translation
- Solving complex equation
- Difference between f and f(r)
- Why no help for print?
- Call C/C++ Code
- How can I clear an assignment to a variable?
- sage vs. maxima for symbolic computation
- Knot Theory and Sage?
- Using numerical solution from system of equations
- Learning Python for Sage
- python equivalent of T(x,y)=(x*y,x+y) ?
- How to Rationalize the Denominator of a Fraction ?
- strange behaviour when solving equations symbolically
- Converting R variables to sage
- Taking derivative of a solution
- evaluating inverse erf
- log base 10
- Reliability of Sage vs commercial software
- sage-support and ask-sage
- Min and functions
- Can two people use a notebook at the same time?
- Indexed family of functions
- combine sage plot with matplotlib
- How to find if computation is in a notebook or sage prompt ?
- Reinstall sage-mode after emacs upgrade
- Preload defined functions for later use
- why won't simplify multiply out square roots?
- Two piecewise defined functions in one plot
- Real Solution of x^3+8 == 0?
- convert expression to function
- Plotting Piecewise function
- Sage 5.0 plot issue
- Why is 3e1 not equivalent to 30?
- Updating Sage
- implicit_plot3d(A(a,b,c,d).determinant()==0,...), variable not found
- Sage won't work on Windows
- Extract solutions from solve
- Using Sage in a tablet.
- Detecting series divergence automatically
- Interface of maxima atensor with sage
- check whether object is matrix
- Limitation of solve?
- Python thing that doesn't work in Sage, works in pure Python
- How to Rationalize the Denominator of a Fraction ?
- Running octave from the sage notebook
- May there is a bug in notebook
- upload data file to notebook
- Sage vs pure python
- Server not found
- Generating a Jacobian matrix for a set of multivariate polynomials
- Symbolic solve
- On what versions should Trac patches be based?
- Why doesn't simplify() simplify symbolic equations?
- should I _really_ review trac tickets?
- using 'solve' with trigonometric functions
- 3d animation with tachyon
- solving homogeneous system of linear equations
- trivial problem with trying to graph 2 functions
- where is the SageMath "Demonstrations Project"?
- Errors when plotting zeta function parametrically
- nth root of huge number
- Sagemath & Cocal what is the actual status?
- TypeError: 'sage.rings.integer.Integer' object is not callable
- Label function automaticaly, 2d plot
- SageMath Icon?
- Is it possible to define (or assume) the derivative of a function
- automatic zordering with plots
- Linear Algebra tutorial with sage command
- Gradient, Divergence, Curl and vector products
- Is there a simple way to deal with computing real nth roots for n a natural number?

- Does sage have facilities to help prove theorems?
- use a colormap for implicit_plot3d
- How to get a list of graphs whose independence number equals to chromatic number?
- how to use the function ord()?
- A bug in Laguerre-L?
- How do I use sage to plot this?
- A simple hypergeometric function fails.
- Sharing Sage on the Web
- can sage stop ordering terms?
- Navigating autocompletion list
- Cloud: allow access to website
- put title on matrix_plot
- implementing Lie-admissible algebras
- How to limit the number digits of constants in displayed real numbers?
- Abstract Algebra Question
- Limitation of solve?
- Specific cmap
- Prevent sage from simplifying
- Eulerian Cycle of a Digraph
- Failure on symbolic solve
- Simplify, Solve Equation and use solution
- Is it possible to run over the isomorphism classes of groups?
- get_minmax_data on implicit_plot
- Solve() confusion...
- terminate notebook and session, The right way?
- Running octave from the sage notebook
- Using numerical solution from system of equations
- How to find if computation is in a notebook or sage prompt ?
- Converting from Mathematica output
- automatic zordering with plots
- rounding bug?
- ValueError: free variable x |--> x when plotting the function x
- Plotting x, free variable error
- How-to: (Linear ...) regression in Sage
- arctan of infinity is undefined
- Does Sage show steps to solving an equation?
- notebook questions
- Calculating Integral
- Translation
- Solving complex equation
- Filing feature requests
- python equivalent of T(x,y)=(x*y,x+y) ?
- evaluating inverse erf
- Difference between f and f(r)
- On what versions should Trac patches be based?
- How to change _latex_ of log to \ln ?
- summing over bessel function
- Installing Optional Package
- How to share files across worksheets ?
- Sage notebook with secure connection
- Call C/C++ Code
- Why no help for print?
- How can I clear an assignment to a variable?
- sage vs. maxima for symbolic computation
- Plotting Overlapping Curves
- Substituting function value in an expression
- Knot Theory and Sage?
- question about plotting points and calculating the average slope
- Solving a linear equation
- Learning Python for Sage
- Indexed family of functions
- Mathematica graphics in a sage notebook
- combine sage plot with matplotlib
- Dropping higher powers of a variable in an expression
- How to Rationalize the Denominator of a Fraction ?
- How to Rationalize the Denominator of a Fraction ?
- Leaving a program running
- Real Solution of x^3+8 == 0?
- Two piecewise defined functions in one plot
- shift picewise functions
- Plot picewise function + infinity, error message
- strange behaviour when solving equations symbolically
- Converting R variables to sage
- Taking derivative of a solution
- Detecting series divergence automatically
- Piecewise functions and legend label
- log base 10
- Is there a simple way to plot an image in a notebook? I.e. the output of the imshow function in matplotlib...
- Build sage with components those are already installed
- solving homogeneous system of linear equations
- Sage vs pure python
- Interface of maxima atensor with sage
- Reliability of Sage vs commercial software
- sage-support and ask-sage
- CLI System Requirements
- Can two people use a notebook at the same time?
- Min and functions
- upload data file to notebook
- Preload defined functions for later use
- Decrease accuracy for floats (decrease decimal places reported)
- How to disable auto-indentation on text mode interface?
- plot issue with a self-defined piecewise function
- using 'R' in sage: can not plot. errors of X11 and PNG
- How to report a mistake in the documentation?
- Symbolic solve
- How can one use maxima kummer confluent functions in sage
- Reinstall sage-mode after emacs upgrade
- Deletion of blocks of cells
- matrix and latex
- How to orthogonaly project a 3d plot to coordinate planes?
- Defining a function and forcing max or min value
- why won't simplify multiply out square roots?
- Plotting Piecewise function
- Basic vector functions in Sage
- May there is a bug in notebook
- Extract solutions from solve
- Display a PNG image file in a worksheet
- Sage 5.0 plot issue
- convert expression to function
- Problem running Sage 5.0 on fedora 16
- Why is 3e1 not equivalent to 30?
- Permutation group: (1234)=(12)(13)(14)
- Submitting a module to Sage trac with supporting test code and documentation
- Python thing that doesn't work in Sage, works in pure Python
- srange bug?
- Updating Sage
- implicit_plot3d(A(a,b,c,d).determinant()==0,...), variable not found
- how do i quit sage?
- Get list of coordinates from plot object
- Order of Irreducible Representation Characters wrong in Sage?
- Sage won't work on Windows
- automatic substitution within functions?
- Creating a polynomial ring where the variables are code generated
- 'module' object has no attribute 'graphics_filename'
- Using Sage in a tablet.
- Problem with infinite sum
- hypergeometric function 2F1 with in Sage
- python 3.x
- check whether object is matrix
- Excercises, randomly generated and automatically checked
- Can I run SAGE in an editor
- Generating a Jacobian matrix for a set of multivariate polynomials
- Illegal kernel in adjoin pvar
- Empirical Data Plot
- sage_eval: invalid syntax
- Fill between two curves
- Using layout option with auto_update=false
- Integrate with elliptic integral special function in result
- atan2 bug?
- modify axe scale
- Server not found
- convolution got the wrong result
- Implicit differentiation displays extraneous x variable.
- Plotting Sequence of Points
- What tests are useful while reviewing a patch if the patchbot report is already positive?
- Rolling back patches
- How to save worksheets in pdf file type?
- How to assign matrix (vector) value to variable
- Why Sage cannot pass a value of variable from one function to another nested function?
- Documentation for show involving ymin and ymax
- Is there a simple way to deal with computing real nth roots for n a natural number?
- Combine two 3d plots
- plotting tan()
- why (4*i+7) in Z[i] not a prime?norm(4*i+7) =65, 65mod4=1
- How to delete output file for rewriting?
- Why doesn't simplify() simplify symbolic equations?
- TypeError: 'sage.rings.integer.Integer' object is not callable
- 3d animation with tachyon
- Find median of [2, 5, 2, 6, 7, 3, 7, 5, 7, 0, 6, 10]
- should I _really_ review trac tickets?
- Error when computing Automorphism Group
- How to use matrices with @interact
- using 'solve' with trigonometric functions
- How can I make a 3D scatter plot?
- How to embed a 3D matplotlib figure in the notebook interface?
- Linear Algebra tutorial with sage command
- Gradient, Divergence, Curl and vector products
- Solving polynomial equations over p-adic fields
- Accessing the "Echelon basis matrix" of kernel of a Matrix
- Make graph from matrix
- trivial problem with trying to graph 2 functions
- How to get positive solution only of a quadratic equation
- Is there a way to use non english symbols?
- How do I split a cell in two in sagemath?
- find all squares modulo a prime number
- Errors when plotting zeta function parametrically
- How to define Sage function with Optional arguments?
- How to find the discriminant of a number field ?
- where is the SageMath "Demonstrations Project"?
- What should the FAQ contain?
- nth root of huge number
- export notebook output to html
- declare a variable as *not* an integer for solve
- Help to understand an AttributeError in a polynomial ring
- using a method fixed in a bug ticket
- Why can you expand with one unknown but not more?
- Is it possible to define (or assume) the derivative of a function
- Wrong arrangement of LaTeX output within bounding box of text plot
- Controlling tick marks in plots
- Sagemath & Cocal what is the actual status?
- What is the difference between .sage and .sagesw?
- Label function automaticaly, 2d plot
- SageMath Icon?
- Get objects from a Graphics3dGroup
- solving a physic problem using sage
- local variable 'Integer' referenced before assignment
- Set axes in 3d plot
- Why does simplify break print_latex_func?

● Commentator × 1 ● Enlightened × 1 ● Scholar × 1

● Nice Question × 8

- Using GAP package in Sage
- How to magically define variables and use functional notation instead of methods
- Using @parallel in creating a list
- Python thing that doesn't work in Sage, works in pure Python
- Defining Dirichlet series
- Terminal with autocomplete no longer useful
- Recovering numbers from continued fraction
- Plot graph by distance from a given vertex

● Organizer × 1 ● Favorite Question × 1 ● Necromancer × 9

- Problems with maxima.function of one variable
- edge labels and vertex size causes problems
- Defining Dirichlet series
- Prevent sage from simplifying
- Differentiating Complex Conjugated Functions
- Minimal notebook system requirements
- Gradient, Divergence, Curl and vector products
- solving a physic problem using sage
- sagemath 8.6 could not work normally on mac 10.14.3

● Notable Question × 20

- Terminal with autocomplete no longer useful
- When would sage -sh not work?
- Defining Dirichlet series
- Getting a rooted graph from a nested list of lists
- Convert from int to double and back in Cython
- Using @parallel in creating a list
- Sage cell server - do I really need so many makeSagecell invocations?
- Python thing that doesn't work in Sage, works in pure Python
- Solve very simple linear program
- How to magically define variables and use functional notation instead of methods
- How do I get output from sage -c ?
- Exact syntax for bdist
- How do do more complex shell commands in Sage?
- I want to plot power series with symbolic functions
- Can one do development in the virtual machine?
- Plot graph by distance from a given vertex
- Using quotes inside sageplot environment in SageTeX
- Using GAP package in Sage
- Getting range from things which aren't integers yet, but will be
- Recovering numbers from continued fraction

● Guru × 10

- notebook questions
- Difference between f and f(r)
- Prevent sage from simplifying
- How-to: (Linear ...) regression in Sage
- strange behaviour when solving equations symbolically
- Solving complex equation
- Simplify, Solve Equation and use solution
- Extract solutions from solve
- How can I clear an assignment to a variable?
- upload data file to notebook

- notebook questions
- Difference between f and f(r)
- Knot Theory and Sage?
- sage-support and ask-sage
- Reliability of Sage vs commercial software
- Prevent sage from simplifying
- How-to: (Linear ...) regression in Sage
- strange behaviour when solving equations symbolically
- Solving complex equation
- Converting R variables to sage
- Simplify, Solve Equation and use solution
- sage vs. maxima for symbolic computation
- Extract solutions from solve
- How can I clear an assignment to a variable?
- upload data file to notebook
- How to Rationalize the Denominator of a Fraction ?

● Popular Question × 25

- When would sage -sh not work?
- Exact syntax for bdist
- Defining Dirichlet series
- Can one do development in the virtual machine?
- Convert from int to double and back in Cython
- How to magically define variables and use functional notation instead of methods
- How do I get output from sage -c ?
- Using @parallel in creating a list
- getting blank cells in html.table
- How do do more complex shell commands in Sage?
- Solve very simple linear program
- Python thing that doesn't work in Sage, works in pure Python
- Sage cell server - do I really need so many makeSagecell invocations?
- I want to plot power series with symbolic functions
- Getting a rooted graph from a nested list of lists
- Plot graph by distance from a given vertex
- How to test all but a couple files
- After debugging problem in building Sage library during initial build, how to continue?
- Terminal with autocomplete no longer useful
- Using quotes inside sageplot environment in SageTeX
- Using GAP package in Sage
- Getting range from things which aren't integers yet, but will be
- Difference between RealNumber and RealLiteral
- spline smoothing parameter
- Recovering numbers from continued fraction

- Defining Dirichlet series
- Plotting Overlapping Curves
- intersection of subgroups
- Python thing that doesn't work in Sage, works in pure Python
- Plot graph by distance from a given vertex

● Good Question × 5

- How to magically define variables and use functional notation instead of methods
- Defining Dirichlet series
- Python thing that doesn't work in Sage, works in pure Python
- Using GAP package in Sage
- Terminal with autocomplete no longer useful

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