Talk:Purity (quantum mechanics)

It seems that the edit by IP address 86.73.72.40 : Projectivity of a measurement and the reference is not relevant to the encyclopedic nature of wikipedia. It may even be self promotion. The IP address 86.73.72.40 has gone about adding this reference and information rtelated to this reference at several Physics pages. Kanwarpreet Grewal 09:38, 2 April 2010 (UTC) —Preceding unsigned comment added by Kp grewal (talk • contribs)

Removing "too technical" template and upgrading article to "start" class
It seems that now the article has sufficient background information so a non-expert reader would be able to understand the concept of purity and its meaning. Of course, readers who are not familiar with QM will struggle with this article, but it still directs them to the basic wiki articles in the subject, so after a while they can come back and understand it.

In addition, the article itself contains explanations from numerous perspectives. Although not complete, this article is developing and in my opinion be classified as a "start" article. Cmechel (talk) 22:40, 26 November 2016 (UTC)

Removal of irrelevant section
As said above, the section about "Projectivity of a measurement" should probably be removed. Isn't it? Tal Mor (talk) 13:49, 11 December 2016 (UTC)

Pure state???
And again no definition of a pure state to be found! Does the writer know what he/she is talking about? — Preceding unsigned comment added by Koitus~nlwiki (talk • contribs) 16:11, 2 November 2020 (UTC)