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Week workers and Group Theory

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#matrices #finite-groups #systems-of-equations
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Derivative of a product respect a vector.

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#linear-algebra #matrices #derivatives
29
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Determining if a linear transformation is one to one

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#matrices #transformation
241
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Unitary matrices as a function of Hermitian matrices

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#linear-algebra #matrices
66
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Singular-value of $f$(A)

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#linear-algebra #matrices #svd
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Prove that the Laplace expansion for the determinant is the same for any choice of row or column

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#matrices #determinant #laplace-expansion
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When is the equicorrelation matrix positive-definite?

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#matrices #statistics #eigenvalues-eigenvectors #matrix-decomposition #positive-definite
178
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Matrix Inequality involving bilinear forms

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#matrices #inequality #optimization #geometric-inequalities
108
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Determining the nullspace and range of a linear transformation

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#matrices #linear-transformations
23
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how to make an line more tall and still on the same lope?

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#matrices
318
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Find necessary and sufficient conditions on $a,b,c$ such that the matrix $\begin{bmatrix}a & b\\b & c\end{bmatrix}$ has a factorization $LL^{T}$

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#linear-algebra #matrices #matrix-decomposition #symmetric-matrices #positive-semidefinite
111
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Determining a matrix representation of a linear transformation relative to a basis

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#matrices #linear-transformations
147
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Finding points on a line that are closest

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#linear-algebra #matrices #vectors #systems-of-equations
42
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Finding a basis for the intersection of two vector subspaces

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#matrices
64
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Proof involving linear transformations

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#linear-algebra #matrices #vectors #linear-transformations #reflection

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