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Sufficient conditions for positive semidefiniteness of block matrix

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#linear-algebra #matrices #positive-semidefinite
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Is the real part of a positive semi-definite matrix positive semi-definite over $\mathbb C^n$

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#linear-algebra #matrices #positive-semidefinite
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Sufficient conditions for positive semidefinite matrices

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#linear-algebra #matrices #symmetric-matrices #positive-semidefinite
338
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Positive semi-definiteness of a complex Matrix with special form.

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#linear-algebra #matrices #positive-definite #positive-semidefinite
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$A\succeq 0$, $A\in \mathbb{R}^{2\times 2}$. Are all expanded matrices produced by $A$ and $0$ positive semidefinite?

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#matrices #positive-semidefinite
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The Hessian matrix A may be Indefinite or what is known Positive Semidefinite or Negative Semidefinite

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#multivariable-calculus #hessian-matrix #positive-semidefinite #multivalued-functions
67
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Are only symmetric matrices definite?

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#linear-algebra #matrices #positive-definite #symmetric-matrices #positive-semidefinite
38
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Move an orthonormal frame towards principal axis of a p.s.d. matrix

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#linear-algebra #geometry #linear-transformations #orthogonal-matrices #positive-semidefinite
449
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How to determine singular or nonsingular matrix

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#matrices #singularity #positive-semidefinite
74
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What are the conditions to make $A \otimes I - B$ positive semi-definite?

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#matrices #positive-definite #positive-semidefinite
268
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Existence of a positive semidefinite matrix that satisfies a set of equality constraints

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#linear-algebra #convex-optimization #numerical-optimization #positive-semidefinite #semidefinite-programming
2.2k
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How to write the dual of quadratic program with positive semidefinite matrix?

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#convex-optimization #lagrange-multiplier #quadratic-programming #positive-semidefinite
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What do negative eigenvalues for Laplacian matrix, if possible, represent?

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#linear-algebra #graph-theory #eigenvalues-eigenvectors #positive-semidefinite #graph-laplacian
48
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Which matrix norm is being used?

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#matrices #normed-spaces #positive-semidefinite
86
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Constraints for a Hadamard product to have rank 1

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#matrix-rank #constraints #positive-semidefinite #hadamard-product

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