615 questions

plot a phase portrait

• differential_system
• ode

integral not simplifying

• integral
• simplify

Evaluating gradient of numerically approximated function

• numerical
• integral
• field
• vector
• gradient

How to find orthogonal subspace of a subspace

• linear-algebra

support() and coefficients() in combinatorial free modules

• CombFreeModule
• CyclotomicField
• kernel

How to add two vectors in polar coordinates

• vectors
• cylindrical
• coordinates
• polar

Vector/Algebra valued differential forms

• vector
• bundle
• tensor
• differential
• forms

enriched contour plot

• contour_plot
• points

How to concatenate 2 vectors in a third ...

• vector
• concatenation

444

views

1

answer

1

vote

2021-07-22 19:49:55 +0100 John Palmieri

Defining vector partition functions in sage

• partitions

Assuming matrix is positive semi-definite

• multivariable
• normal
• matrices
• assume

Gradient (nabla)

hi could you tell me the sage command to restrict a vector subspace of a bilinear form? thank you

• QuadraticForm

1k

views

3

answers

2

votes

2021-07-05 21:04:42 +0100 FrédéricC

fixed subfield of cyclotomic field

• galois_group
• number_fields

differential equation

• diffequation
• graphics
• constant

337

views

1

answer

2

votes

2021-06-09 23:15:17 +0100 rburing

How to interpret Solve_ineq() result ?

• algebra

Function which works with a vector define from outside not from inside

• vector

Performance of PolynomialRing evaluation

• performance
• polynomial
• ring
• evaluation

307

views

1

answer

no

votes

2021-05-12 05:28:13 +0100 John Palmieri

How to delete several vectors from a vector space?

A certain polyhedron-related computation: any way to get it quicker?

• polyhedra
• computation_time

How to define functions with varying number of variables

• symbolic
• function
• definition
• substitution

Implementation of Schonhage's Algorithm for 2-d lattice reduction

• lll

Running a for cycle in parallel

• parallelization
• for-loop
• optimization

Why `unable to convert (sin(h(x)), cos(h(x))) to a symbolic expression`?

• symbolic-expression

How to convert linear system to matrix form

• convert
• sagemath
• equation
• linear
• matrix

Goppa Codes: Cannot create decoder with large parameters

• cryptography
• student
• memory-limits
• Code
• help

1k

views

2

answers

1

vote

2021-03-27 01:06:21 +0100 Juanjo

How to show that two given functions are linearly dependent

• independence
• dependence
• differential_eqns

614

views

2

answers

1

vote

2021-03-26 23:55:46 +0100 Juanjo

How to find second order differential equation from general solution?

• differential_eqns

Splitting a matrix

• matrix
• algebra
• combinations

Elementwise functions for deep learning

• elementwise
• softmax
• deep-learning
• sigmoid