249 questions

636

views

1

answer

1

vote

2019-07-29 15:23:36 +0200 FrédéricC

Extremal Rays of a Cone

• linear-algebra
• cones
• linear-programming

Equation for hyperplane of a reflection - Try to do TODO on reflection group sage page

• coxetergroup
• Hyperplane
• linear_algebra
• linear_equations

How to define functions with varying number of variables

• symbolic
• function
• definition
• substitution

Parallelizing symbolic matrix*vector computations for sparse matrices and vectors

• parallelization
• SparseMatrix
• sparse

2k

views

1

answer

1

vote

2020-03-05 16:05:38 +0200 Juanjo

plotting a Surface gradient

How can I override the __call__ method of a matrix

• inheritance

How to return a list from callable symbolic expression

• list
• callable
• symbolic
• expression

When Must I Use `lambda`?

• lambda

Apply Functions Iteratively

• loop
• function
• matrix
• list

1k

views

1

answer

1

vote

2018-05-16 20:55:18 +0200 John Palmieri

span of a matrixspace

• matrices
• SparseMatrix
• spanning

Can I convert integermod_int to int?

• vector

How to add two vectors in polar coordinates

• vectors
• cylindrical
• coordinates
• polar

Efficiency SAGE vs GAP

• gap4
• linear-algebra

Restricting vector field to a subset of a rectangular region

• vector-fields
• dynamical-systems

An algorithm on root systems' vectors "ValueError: too many values to unpack "

I want my plotting function to treat numbers as numbers, not variables

• linear-algebra
• confirmed_issue
• density_plot

746

views

2

answers

1

vote

2020-12-17 12:41:03 +0200 Juanjo

minimize_constrained works for f(x,y)=x+y but not for f(x,y)=x

• confirmed_issue

find maximum value of F

• max_symbolic
• expressions
• sage
• function

2k

views

2

answers

1

vote

2021-03-27 01:06:21 +0200 Juanjo

How to show that two given functions are linearly dependent

• independence
• dependence
• differential_eqns

Plotting 2d vector fields – how to delay function evaluation

• function
• plot
• vector_field
• confirmed_issue
• evaluation

apply functions iteratively (modified re-post)

• vector
• loop
• iteration

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

• math
• matrix
• vector
• function

use type signature in functions for matrix and vector

• matrix

494

views

1

answer

1

vote

2021-07-22 19:49:55 +0200 John Palmieri

Defining vector partition functions in sage

• partitions

Speed comparison with numerical arrays: sage, R, matlab

• performance
• arrays
• random
• numpy

Passing params to cythonized ode_system()

• cython
• ode
• overloading

General solution for a matrix

• matrix

Solving polynomial equations over p-adic fields

• solve
• polynomials
• p-adic

Performance of PolynomialRing evaluation

• performance
• polynomial
• ring
• evaluation

Polynomial ring indexed over an abelian group (magma).

• magma
• DefineVariables