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beyondinfinity
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5
Intuition for geometric multiplicity $\leq$ algebraic multiplicity
Oct 7, 2023
2
Why does scaling a column of $U$ by $-1$ make the SVD of a matrix incorrect?
Nov 28, 2023
1
Can we have a conditionally convergent alternating series that fails the alternating series test?
Nov 1, 2023
1
Prove that non-null zero-diagonal symmetric matrices must have at least one nonzero eigenvalue
Dec 9, 2023
1
$\forall x(P(x) \rightarrow Q(x))\stackrel{?}{\equiv}\neg\exists x(P(x) \rightarrow \neg Q(x))\stackrel{?}{\equiv}\neg\exists x(P(x) \wedge\neg Q(x))$
Jan 24
1
Decompose a $3 \times 3$ orthogonal matrix into a product of rotation and reflection matrices
Jul 9
0
Why are the number of pivot columns in $V$ equal to the dimension of the span of the column vectors of $V$?
Sep 2, 2023
0
Why must $\vec{v} = \frac{\vec{u}\cdot \vec{v}}{\vec{u}\cdot \vec{u}} \vec{u}$ for equality in the Cauchy-Schwarz Inequality? [duplicate]
Oct 24, 2023
0
Proof that the number of pivots of a product of matrices is the minimum number of pivots of the matrices
Nov 6, 2023
0
Is a translated vector in $\mathbb{R}^n$ the same vector?
Apr 3