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This article needs a mathamatical definition of what constitutes a quasiprobability distribution. All it talks about is density operators and that this has the properties of a quasiprobabilty distrubtion, but it never explicitly states what these properties are. — Preceding unsigned comment added by 220.127.116.11 (talk) 11:10, 8 April 2014 (UTC)
Tweaked and highlighted (italicized) the crucial feature of all such distributions, bona-fide, or quasi-: their providing the measure in integrals yielding expectation values. To learn the drill, read up on probability distributions, and come back here to relax provisos. Cuzkatzimhut (talk) 16:41, 8 April 2014 (UTC)
I'm completely with /18.104.22.168 on this point. The title suggest that the article is about the mathematical definition and properties of a quasi probabillity-distribution. Instead it is about certain aspects of phase space quantum mechanics. Maybe a title like "Quasi-Probability distributions in the phase-space-quantization" is more appropriate. In that case another article about the mathematics of these quasi-prob. distributions has to be written. — Preceding unsigned comment added by 22.214.171.124 (talk) 19:00, 12 March 2017 (UTC)
Sure, "has to be written", indeed. You are quite right this article is about phase space quantization, because that entire field (and its signal processing twin) relies on QPDs, and it is emphasized in the lede. If and when the proverbial "somebody" wrote that article, she/he might as well insert it here. In the meantime, you are just inviting the world to write an article? Cuzkatzimhut (talk) 00:28, 13 March 2017 (UTC)