1059 questions

NEW VERSION: Sparse matrix stores something for each row?

• matrices
• SparseMatrix
• memory-leak

Error in SageMath Code which crash my PC

• confirmed_issue

Vector field: how to make arrows fine? (plot2d)

• plot2d
• arrow

Velocity of time

• sagemanifolds

Number of linear independent subsets with cardinality 4

2k

views

1

answer

2

votes

2018-12-02 19:41:13 +0100 rburing

Error in finding the closest vector in a sublattice of Z^n

• lattices

Trying to get the right inverse, not possible

• matrix

How to use the divergence of a finite function as the source term of another problem

• FEniCS
• finite
• Element
• method

Finding the Groebner Basis of the following Ring. Is it possible? How could I make it work with multivariate polynomials?

• groebner_basis
• BooleanPolynomial

Eigenvectors of matrices over finite fields

• eigenvectors
• finite-field
• linear-algebra

`Fraction must have unit denominator`when using polynomial.numerator()

• univariate_poly
• IntegerRing
• rational-polynomial

Computing the basis of the Frobenius function fixed point space

• subspace
• fixed-points
• finite-fields

SageManifolds different frames

• sagemanifolds

Add Polynominals to Matrix.

Killing vectors

• sagemanifolds

Restriction of domain of vector field

• plot_vector_field
• vector_field
• domain
• implicit_plot
• manifolds

how to get the transformation matrix for a transformation over 4x4 matrices?

• MatrixSpace
• transformation
• matrix
• vectorspace

Solving underdetermined system of quadratic equations over GF(2)

• Stream
• cipher
• MQ

How to realize the composition of rational function mappings with Sagemath?

• composition
• sagemath

Polynomial interpolation given a mathematic function f(x), an interval [a,b] and a natural number n

• math
• matrix
• vector
• function

964

views

1

answer

1

vote

2018-10-06 10:39:04 +0100 rburing

Print symbolic variables like a_1 in A[1] style

• lists
• symbolic
• vectors
• dictionary
• conversion

Memory leaks with matrix multiplication over GF(2)

• confirmed_issue
• memory_leak

list of random non-zero elements

• list
• random_element

3k

views

1

answer

1

vote

2018-09-01 20:28:38 +0100 rburing

vector constants and vector functions

• vector
• linear-algebra
• vector_calculus

Power set with group operation as symmetric difference

• abelian_group
• module

Simplify vector vs. its norm

• vector
• norm
• simplify

su2 matrix exponentiation

• su2
• algebra
• matrix
• exponentiation

Quaternions Missing Important Functionality?

• quaternion
• clifford-algebra
• vector
• matrix
• symbolic

div, grad and curl once again

• confirmed_issue
• div
• grad
• curl
• laplacian

Is there a way to start a Sage session from a session of its Python interpreter ?

• interpreter
• interface
• repl