8,102 questions

Inverse of real sparse matrix

• inverse
• SparseMatrix
• RealField
• confirmed_bug

where to report bugs found using systems used by sage?

• bugs
• fixed_bug

How to plot points of size less than 1?

• points
• graphics
• 2Dplot

How to find the norm of a quaternion?

Slider for fractions of pi

Setting the components of a differential form systematically.

• differential_form
• DifferentialForms
• sagemanifolds

20

views

1

answer

1

vote

2019-08-22 14:06:31 -0500 rburing

Calling singular.invariant_ring

Calling singular.invariant_theory [closed]

164

views

1

answer

1

vote

2019-08-21 04:04:41 -0500 rburing

Computing a formula in SAGE

• calculus
• algebra

18

views

1

answer

1

vote

2019-08-21 03:53:21 -0500 rburing

Change base Field of Vector Space

• vector
• space

Checking identity of two combinatorial expressions

• combinatorics
• binomial
• identity
• symbolic-expression

Find solution to Polynomial Sequences without going through variety

• MPolynomial
• groebner_basis
• ideals
• variety

`sage -pip install --user ffmpeg` did not make the "`OSError: Error: ffmpeg does not appear to be installed.`" message go away

• cocalc
• pip
• communication

RISE in Jupyter

• Jupyter

49

views

1

answer

1

vote

2019-08-19 11:54:55 -0500 rburing

Defining manifolds in a systematic way.

• manifold
• manifolds
• lists

Automorphism group of coxeter groups

• coxetergroup

cosmological spacetimes

• general-relativity
• spacetime
• tensor

asking real part of a function crash the kernel

• real_part
• crash
• confirmed_bug

How to expand the result of derivative()?

• derivative
• expand

Source for Principal Null Directions Kerr, Example Worksheet

• Kerr
• spacetime
• killing-tensor
• general-relativity

var list with only one variable error

• var
• list
• confirmed_bug

Import sage in python3

• python3

How to find a CM point with the image in the elliptic curve under modular parametrization given

• number-theory
• Elliptic-curves

Submitting code to Sage

• MixedIntegerLinear
• submitting_code

Obtain a particular solution for a system of inequalities whose variables can only take certain values

• inequalities
• assumption
• inequalities-output

Sage on Jupyter - socket error

• jupyter-notebook

25

views

1

answer

2

votes

2019-08-09 13:15:49 -0500 rburing

Plotting a LabelledOrderedTree with duplicate labels

• trees
• duplicates

37

views

1

answer

no

votes

2019-08-09 08:16:17 -0500 rburing

Define the affine variety $X = V (y − x^2, y − x + 1)$.

• AlgebraicGeometry
• algebra
• geometry
• CommutativeAlgebra

Matrix groups

• MatrixGroup

Betti numbers of Nakajima Quiver varieties

• quivers