Talk:Spark (mathematics)

This is the talk page for discussing improvements to the Spark (mathematics) article.
This is not a forum for general discussion of the article's subject.

Put new text under old text. Click here to start a new topic.
New to Wikipedia? Welcome! Learn to edit; get help.

Article policies

Find sources: Google (books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL

Mathematics Low‑priority

	Mathematics portal This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics articles
Low	This article has been rated as Low-priority on the project's priority scale.

Electrical engineering Low‑importance

	Engineering portal This article is within the scope of WikiProject Electrical engineering, a collaborative effort to improve the coverage of Electrical engineering on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Electrical engineeringWikipedia:WikiProject Electrical engineeringTemplate:WikiProject Electrical engineeringelectrical engineering articles
Low	This article has been rated as Low-importance on the project's importance scale.

It is requested that a mathematical diagram or diagrams be included in this article to improve its quality. Specific illustrations, plots or diagrams can be requested at the Graphic Lab.
For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images.

Definition in case of full column rank

The article says, "If all the columns are linearly independent, $\mathrm {spark} (A)$ is usually defined to be $m+1$ ". However, I'm questioning this claim. For instance, I wonder if it "should" instead be e.g. $n+1$ . The two supporting references do not seem relevant; the Princeton Companion to Applied Mathematics article does not consider the full-column-rank case, and the Industrial Mathematics and Complex Systems chapter does not apply. Thatsme314 (talk) 22:18, 8 May 2024 (UTC)[reply]

I agree. There is an m+1 lower in the article that actually does make sense, and I imagine that this m+1 occurred as an accidental result of copying that other m+1. Other sources like this one say that it should be n+1, and that makes much more sense. 76.11.97.150 (talk) 17:56, 4 June 2024 (UTC)[reply]