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What does the notation $P_{ij} ([i, j],[i, j])$ mean for matrices?

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#linear-algebra #abstract-algebra #matrices #numerical-linear-algebra
132
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Check if line (with two 3D points) is lying on a plane (with 3 vertices)

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#linear-algebra #geometry #numerical-linear-algebra #plane-geometry
244
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Orthogonal Projection in Arnoldi iteration.

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#numerical-linear-algebra
76
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Clarification needed for a question about norms

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#linear-algebra #numerical-linear-algebra
32
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Trying to estimate the elements of the coefficient vector $c$ of an $N\times N$ linear system $(A+B)c = y$

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#linear-algebra #inequality #numerical-methods #numerical-linear-algebra #upper-lower-bounds
788
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Backward stability of 'standard' algorithm for cross product calculation

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#numerical-methods #numerical-linear-algebra
164
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Divide by zero error

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#linear-algebra #numerical-methods #numerical-linear-algebra
669
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Prove $I-A^{-1}$ is positive definite

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#matrices #numerical-linear-algebra #positive-definite
385
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Condition number linear system

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#linear-algebra #matrices #numerical-linear-algebra #condition-number
1.4k
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Complexity of solving a linear system of equations

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#linear-algebra #algorithms #computational-complexity #numerical-linear-algebra
56
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Where is the flaw in my stability analysis of this ODE?

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#ordinary-differential-equations #numerical-methods #numerical-linear-algebra
228
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Rotation matrix for multiple vectors

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#linear-algebra #approximation #numerical-linear-algebra #rotations
254
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Relative error floating point number multiplication/division

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#numerical-methods #numerical-linear-algebra #floating-point #numerical-calculus
42
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Vector Multiplication Summation to Matrix Notation Confusion

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#matrices #vectors #numerical-linear-algebra
62
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Is it possible to generate and solve a system of equations, given just one initial equation and solution?

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#linear-algebra #numerical-linear-algebra

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