
What is the norm of a complex number? [duplicate]
Jan 24, 2013 · In number theory, the "norm" is the determinant of this matrix. In that sense, unlike in analysis, the norm can be thought of as an area rather than a length, because the determinant can …
Understanding L1 and L2 norms - Mathematics Stack Exchange
Feb 6, 2021 · I am not a mathematics student but somehow have to know about L1 and L2 norms. I am looking for some appropriate sources to learn these things and know they work and what are their …
2-norm vs operator norm - Mathematics Stack Exchange
The operator norm is a matrix/operator norm associated with a vector norm. It is defined as $||A||_ {\text {OP}} = \text {sup}_ {x \neq 0} \frac {|A x|_n} {|x|}$ and different for each vector norm. In case of the …
functional analysis - The sampling way of discrete Sobolev norm ...
Feb 10, 2026 · Yes, as indicated by daw, because your discrete Sobolev norm only includes the values of the function evaluated at the discrete mesh points, it is always possible to construct a nonzero …
What is the difference between the Frobenius norm and the 2-norm of …
For example, in matlab, norm (A,2) gives you induced 2-norm, which they simply call the 2-norm. So in that sense, the answer to your question is that the (induced) matrix 2-norm is $\le$ than Frobenius …
normed spaces - Simple explanation of uniform norm / sup-norm ...
Dec 17, 2017 · I've read the Uniform Norm Wikipedia page, but my most of it went over my head. What is the sup-norm in simple and / or intuitive terms? Are there any good examples which illustrate it?
Definition of $L_\infty$ norm - Mathematics Stack Exchange
Jul 7, 2014 · Definition of $L_\infty$ norm Ask Question Asked 11 years, 8 months ago Modified 8 years, 8 months ago
Estimate norm of convolution operator - Mathematics Stack Exchange
Mar 2, 2024 · Not exactly, sorry. I already know it is bounded, all is left is to find/estimate the operator norm more closely
Differentiate the norm of a function - Mathematics Stack Exchange
Sep 13, 2019 · How should I differentiate the norm of a function? I mean, how can I get the first and second derivatives of something like: $$||\alpha (s)||^2$$ I know that I have to use the chain rule, but …
How to express the Frobenius norm of a matrix as the squared norm of ...
How to express the Frobenius norm of a matrix as the squared norm of its singular values? Ask Question Asked 11 years, 1 month ago Modified 2 years ago