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15
Math.TechQA.Club
2026-03-26 12:37:22
226
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$x \ge 0, z \ge 0, xz \ge y^2$ for symmetric $2 \times 2$ positive semidefinite matrix
Published on
26 Mar 2026 - 12:37
#linear-algebra
#matrices
#symmetric-matrices
#positive-semidefinite
184
Views
Orthonormal Basis that minimises $\sum_{i=m}^n u_i^T A u_i$
Published on
27 Mar 2026 - 10:10
#linear-algebra
#optimization
#eigenvalues-eigenvectors
#positive-definite
#symmetric-matrices
230
Views
vectorized product of two matrices, with one symmetric
Published on
20 Feb 2020 - 3:18
#symmetric-matrices
#kronecker-product
#vectorization
37
Views
For any non-singular square matrix A, is A + A' a Positive Definite matrix?
Published on
27 Mar 2026 - 10:09
#matrices
#positive-definite
#symmetric-matrices
84
Views
What does it mean for a scalar valued vector function to be equal to its determinant?
Published on
26 Feb 2020 - 1:42
#derivatives
#determinant
#vector-analysis
#matrix-calculus
#symmetric-matrices
160
Views
Norm of $(A+B)^{-1}(A-B)$?
Published on
28 Mar 2026 - 1:03
#matrices
#positive-definite
#symmetric-matrices
89
Views
A nice lemma one the eigenvalues of symmetric matrices
Published on
26 Feb 2020 - 11:24
#linear-algebra
#matrices
#diagonalization
#symmetric-matrices
173
Views
connections between eigenvalues of $B$ and $A+iB$
Published on
26 Feb 2020 - 14:30
#linear-algebra
#matrices
#complex-numbers
#eigenvalues-eigenvectors
#symmetric-matrices
296
Views
Inertia tensor/second moments/covariance matrix of an $n$-dimensional simplex
Published on
27 Mar 2026 - 0:58
#linear-algebra
#multivariable-calculus
#physics
#symmetric-matrices
#simplex
138
Views
Construct a symmetric matrix that fits certain equation
Published on
27 Feb 2020 - 15:34
#linear-algebra
#matrix-calculus
#symmetric-matrices
58
Views
Representing $X^\top MX$ as a function of $MX$
Published on
26 Mar 2026 - 4:50
#linear-algebra
#matrices
#symmetric-matrices
#transpose
257
Views
The identity $(A-\lambda I)(A-\mu I)=xx^T$ for a symmetric matrix A.
Published on
03 Mar 2020 - 5:05
#linear-algebra
#eigenvalues-eigenvectors
#symmetric-matrices
164
Views
When/How An Undirected Graph Can Be Recovered From Graph Laplacian
Published on
25 Mar 2026 - 8:07
#matrices
#graph-theory
#positive-definite
#symmetric-matrices
#graph-laplacian
33
Views
Does this statement on symmetric matrix hold?
Published on
05 Mar 2020 - 21:27
#matrices
#symmetric-matrices
145
Views
What are all the binary matrices leading to a given Gramian matrix of non-negative integers as elements?
Published on
26 Mar 2026 - 9:18
#linear-algebra
#combinatorics
#matrix-decomposition
#symmetric-matrices
#block-matrices
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