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15
Math.TechQA.Club
2026-03-27 02:39:50
1.3k
Views
When does multiplication by an orthogonal matrix preserves the eigenvalues?
Published on
27 Mar 2026 - 2:39
#linear-algebra
#eigenvalues-eigenvectors
#matrix-equations
#matrix-calculus
#orthogonal-matrices
48
Views
Need help to get via the two given matrix-equations the desired (given) one.
Published on
06 Jan 2020 - 15:11
#linear-algebra
#matrices
#matrix-equations
#matrix-calculus
269
Views
Calculate correct Azimuth while compensating for Pitch/Tilt changes
Published on
27 Mar 2026 - 14:11
#matrices
#trigonometry
#3d
#matrix-calculus
#angle
965
Views
Orthogonal matrix which preserves the eigenvalues of a diagonal matrix
Published on
27 Mar 2026 - 2:34
#linear-algebra
#eigenvalues-eigenvectors
#matrix-equations
#matrix-calculus
#orthogonal-matrices
539
Views
Derivative of matrix exponential of linear combination
Published on
26 Mar 2026 - 20:16
#matrices
#derivatives
#matrix-calculus
#matrix-exponential
61
Views
Matrix Calculus: product rule between row vector and square matrix with regards to a row vector of variables
Published on
29 Mar 2026 - 7:31
#multivariable-calculus
#derivatives
#matrix-calculus
#tensors
292
Views
The squared euclidean norm of an induced matrix norm
Published on
28 Mar 2026 - 23:58
#optimization
#normed-spaces
#matrix-calculus
#lagrange-multiplier
969
Views
Gradient of vector matrix product
Published on
11 Jan 2020 - 21:10
#calculus
#matrices
#multivariable-calculus
#derivatives
#matrix-calculus
135
Views
Antiderivative of a matrix
Published on
12 Jan 2020 - 20:11
#integration
#matrices
#multivariable-calculus
#partial-differential-equations
#matrix-calculus
33
Views
Differentiating and simplifying matrices
Published on
12 Jan 2020 - 21:36
#matrices
#derivatives
#matrix-calculus
637
Views
Taking the gradient of $f(\mathbf{x}) = \frac{1}{2}\|\mathbf{A} \mathbf{x} - \mathbf{b}\|_2^2$
Published on
14 Jan 2020 - 6:30
#linear-algebra
#matrices
#multivariable-calculus
#derivatives
#matrix-calculus
36
Views
General solution of the matrix equation $\dot{F}(t)=L(t) F(t)$
Published on
24 Feb 2026 - 19:00
#matrix-equations
#matrix-calculus
#integro-differential-equations
60
Views
Differentiating the trace with respect to a parameter
Published on
28 Mar 2026 - 9:55
#matrices
#derivatives
#matrix-calculus
#trace
653
Views
Logarithm of a Jordan block
Published on
29 Mar 2026 - 16:47
#linear-algebra
#matrices
#logarithms
#matrix-calculus
#jordan-normal-form
142
Views
Conditions for the logarithm of a symmetric positive definite matrix to be positive definite
Published on
17 Jan 2020 - 11:18
#linear-algebra
#matrices
#matrix-calculus
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