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Linear-algebra
New post in Linear-algebra
Why the ratios of the coefficient of x and y of two parallel lines are equal but it is not equal to the ratio of their constant terms?
August 21st, 2022
linear-algebra
geometry
True or False elementary matrices
August 6th, 2022
matrices
linear-algebra
Is there a non-linear combination of basis vectors?
January 13th, 2023
linear-algebra
dimension of operations of subspaces
January 3rd, 2023
vector-spaces
linear-algebra
How to prove that the solutions of a linear system Ax=0 is a vector space over R?
December 24th, 2022
vector-spaces
homogeneous-equation
linear-algebra
Matrix multiplication: AB=BA for every B implies A is of the form cI
December 22nd, 2022
matrices
linear-algebra
Finding rank of matrix A^2 =A
December 21st, 2022
vector-spaces
linear-algebra
Proof that if $ax = 0_v$ either a = 0 or x = 0
December 11th, 2022
linear-algebra
If $x+y+z=5$ and $xy+yz+zx=3$,then least and largest value of $x$ are?
December 5th, 2022
linear-algebra
Product of two symmetric matrices is similar to a symmetric matrix
December 4th, 2022
linear-algebra
symmetric-matrices
matrices
How to pare down a set to form a basis?
July 23rd, 2022
linear-algebra
How to prove that a homogeneous system of linear equations with more unknowns than equations has infinitely many solutions?
November 27th, 2022
linear-algebra
Find the shortest distance from the point P = (2,2,5)
August 15th, 2022
linear-algebra
Let A and B be n by n matrices . Prove that if A is symmetric and B be skew-symmetric , then {A,B} is a linearly independent set.
November 20th, 2022
matrices
linear-algebra
Finding the image of an arbitrary vector.
August 15th, 2022
linear-algebra
Calculate eigenvalues and eigenvector for given 4x4 matrix?
July 23rd, 2022
linear-algebra
# of invertible $n \times n$ matrices with entries in field $k$ with $q$ elements?
August 14th, 2022
abstract-algebra
matrices
linear-algebra
Determinants with arithmetic progressions as columns
October 18th, 2022
determinant
linear-algebra
matrices
Conditions of $AB=0$ where $A$ and $B$ are matrices of compatible dimensions
August 14th, 2022
linear-algebra
matrices
How to find the general solution to this matrix?
September 30th, 2022
linear-algebra
gaussian-elimination
matrices
Determine whether the system $A\mathbb x=\mathbb b$ is consistent by examing how $\mathbb b$ relates to the column vectors of $A$.
July 22nd, 2022
linear-algebra
matrices
What is the proof that det(A) = det(A transpose)?
September 29th, 2022
linear-algebra
Non standard vector addition
September 29th, 2022
linear-algebra
arithmetic
Need help with linear transformations (with projection and reflection)?
July 22nd, 2022
eigenvalues-eigenvectors
linear-algebra
reflection
vectors
transformation
how to find the geometric multiplicity - Linear algebra
August 8th, 2022
linear-algebra
How to show that if $A, B$, and $A + B$ are invertible matrices with the same size, then $A(A^{ −1} + B^{ −1} )B(A + B)^ {−1} = I$
August 27th, 2022
matrices
linear-algebra
Determinant of Gram matrix - without knowing it's a Gram matrix or using anything "fancy"
July 29th, 2022
linear-algebra
abstract-algebra
What's the proof that sum of all projection operators for orthonormal basis gives us identity operator?
September 16th, 2020
linear-algebra
quantum-mechanics
What are the Eigenstates and Eigenvalues?
June 11th, 2020
hilbert-space
linear-algebra
eigenvalue
quantum-mechanics
operators
When writing this Lorentz transform as a matrix why do we take the transpose?
March 4th, 2020
linear-algebra
metric-tensor
special-relativity
notation
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