List questions from absolute-value

Published on 06 Apr 2026 - 15:49

168

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differential equation of first order - omitting absolute value operator

Published on 25 Mar 2026 - 23:10

276

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Taylor expansion of $\lvert\sin(x)\rvert$

Published on 29 Mar 2026 - 22:28

97

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Identities involving addition, subtraction and absolute value

Published on 06 Apr 2026 - 2:38

318

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What is the average absolute deviation of a multivariate normal distribution?

Published on 02 Apr 2026 - 15:00

68

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If $A \in \mathbb{R}^{n \times n}$ then $|a_{ij}| \leq ||A||.$

Published on 10 Nov 2020 - 23:26

36

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How does $|fg|$ compare to $|f||g|$ for two measurable functions $f$ and $g$ on $\mathbb{R}^d$?

Published on 11 Nov 2020 - 16:50

60

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Prove $|-a|\le a\le |a|$

Published on 08 Apr 2026 - 5:12

35

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In "$\,f_w(x) = \sum_{i}\frac{1}{2}\|wx_i + c - Y\|_2^2\,$", what do the stacked "$2$"s at the end mean?

Published on 27 Mar 2026 - 20:21

168

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Length of evolute for general regular $C^2$ curve (is $\kappa'$ continuous?)

Published on 12 Nov 2020 - 15:47

145

Views

How to linearize the following optimization exercises with absolute values?

Published on 27 Mar 2026 - 6:13

117

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Is the absolute value on matrices well-defined with respect to PSD cone?

Published on 26 Mar 2026 - 16:05

255

Views

How to compute $ P.V. \int_{-\infty}^{\infty} \frac{e^{iwx}}{|w|} \,dw $?

Published on 26 Mar 2026 - 6:34

148

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Finding probability of an absolute value function

Published on 16 Nov 2020 - 16:52

72

Views

Prove if$~\vert x \vert < z~$ and $~\vert y \vert < z~$ then $~\Big\vert \dfrac{x+y}{2}\Big\vert + \Big\vert \dfrac{x-y}{2}\Big\vert < z~$

Published on 18 Nov 2020 - 9:42

List Question

Linearize objective function for intlinprog

differential equation of first order - omitting absolute value operator

Taylor expansion of $\lvert\sin(x)\rvert$

Identities involving addition, subtraction and absolute value

What is the average absolute deviation of a multivariate normal distribution?

If $A \in \mathbb{R}^{n \times n}$ then $|a_{ij}| \leq ||A||.$

How does $|fg|$ compare to $|f||g|$ for two measurable functions $f$ and $g$ on $\mathbb{R}^d$?

Prove $|-a|\le a\le |a|$

In "$\,f_w(x) = \sum_{i}\frac{1}{2}\|wx_i + c - Y\|_2^2\,$", what do the stacked "$2$"s at the end mean?

Length of evolute for general regular $C^2$ curve (is $\kappa'$ continuous?)

How to linearize the following optimization exercises with absolute values?

Is the absolute value on matrices well-defined with respect to PSD cone?

How to compute $ P.V. \int_{-\infty}^{\infty} \frac{e^{iwx}}{|w|} \,dw $?

Finding probability of an absolute value function

Prove if$~\vert x \vert < z~$ and $~\vert y \vert < z~$ then $~\Big\vert \dfrac{x+y}{2}\Big\vert + \Big\vert \dfrac{x-y}{2}\Big\vert < z~$

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