Talk:Lp space

Error in the Embedding section?
As discussed here there my be an error in the section about Embeddings. 78.52.121.253 (talk) 10:00, 1 October 2017 (UTC)

Examples needed
This page should include examples of functions which are contained in one L^p space, but not another. This math.stackexchange post has a useful discussion of this question — Preceding unsigned comment added by 63.253.110.78 (talk) 18:11, 26 July 2018 (UTC)

Defintion comes too late
The definition of and L^p space should come right away, before applications. And where it is defined, it says they "may be defined as...", which sounds un-encyclopedic.

L0 norm discussion is confusing
This section mostly talks about what the L0 norm isn't, not what it is. > The mathematical definition of the ℓ0 norm was established by Banach's Theory of Linear Operations. The space of sequences has a complete metric topology provided by the F-norm ... Does this mean that the F-norm is the true definition of L0 norm? If not, what is the definition? This paragraph does not say explicitly. It does explain the scare-quoted L0 norm (or "norm"), but I think that this is almost always what is intended when the term L0 norm is used, even though it's not truly a norm. I was left more confused than before after reading this definition Rpgoldman (talk) 18:34, 26 June 2019 (UTC)


 * I agree, I find this section lacking. I might update it a bit. Anyone have any additional comments about adding things or editing things to it? Tsangares (talk) 18:41, 29 August 2023 (UTC)

Error in p-norm property
In the section "The p-norm in finite dimensions", subsection "Definition", the 2nd property is not quite correct. In the sentence "the length of the vector is positive homogeneous with respect to multiplication by a scalar", the words "positive homogeneous" should be replaced by "absolutely homogeneous". Refer https://en.wikipedia.org/wiki/Norm_(mathematics)#Definition

Rahulwankhede (talk) 02:49, 15 May 2020 (UTC)

"L2 Space" listed at Redirects for discussion
A discussion is taking place to address the redirect L2 Space. The discussion will occur at Redirects for discussion/Log/2020 June 10 until a consensus is reached, and readers of this page are welcome to contribute to the discussion. 1234qwer1234qwer4 (talk) 16:58, 10 June 2020 (UTC)

"L² space" listed at Redirects for discussion
A discussion is taking place to address the redirect L² space. The discussion will occur at Redirects for discussion/Log/2020 June 15 until a consensus is reached, and readers of this page are welcome to contribute to the discussion. Regards, SONIC  678  18:54, 15 June 2020 (UTC)

Confusion with metric in section 6.1 -- needs reference
In the section on the space of measurable functions, there's a definition of a metric referred to as a Lévy metric without reference. Given that the Lévy metric usually refers to a very different metric, it'd be good to have a reference (from a preliminary search, I couldn't find even one). Additionally, the metric given is equivalent to the Ky Fan metric, so it perhaps would seem more reasonable to just call it that. Either way, clarification is needed. — Preceding unsigned comment added by Polynumeric (talk • contribs) 20:39, 20 March 2022 (UTC)

"L∞" listed at Redirects for discussion
The redirect [//en.wikipedia.org/w/index.php?title=L%E2%88%9E&redirect=no L∞] has been listed at redirects for discussion to determine whether its use and function meets the redirect guidelines. Readers of this page are welcome to comment on this redirect at  until a consensus is reached. 1234qwer1234qwer4 19:09, 12 April 2023 (UTC)

Bizarrely organized
The article is bizarrely organized, with the section Applications appearing immediately after the introduction, before the subject of the article has even been defined!

I hope someone knowledgeable about this subject will fix this.