Why is the 2 norm "special"?
42361
Why do we use the Euclidean metric on $\mathbb{R}^2$?
115331
Deriving the sub-differential of the nuclear norm
151910
Why is $K^{\ast n}$ contained in the norm group?
145887
two's complement
58914
Any group of index 2 is normal
31113
Why is normal ordering a valid operation?
63341
What's so special about standard deviation?
17161
Can anyone make me understand in simple language why the second condition for being an Euclidean domain is superfluous?
94999
A subgroup with an index of 2 is normal to the group.
62396
Operator norm. Alternative definition
34759
Name of a special matrix
27706
Explaining two-tailed tests
108123
Why is $\mathbb{C}[x,y]/(y^2 - x^3 + 1)$ normal?
99350
Are two norms equivalent if they induce the same topology on a vector space?
34913
Why does basic algebra provide one value for $x$ when there should be two?
94543
Topological/Geometrical justification for $\text{CFT}_2$ being special
81112
Proving that the dual of the $\mathcal{l}_p$ norm is the $\mathcal{l}_q$ norm.