Talk:Eduard Study

	Biography portal This article is within the scope of WikiProject Biography, a collaborative effort to create, develop and organize Wikipedia's articles about people. All interested editors are invited to join the project and contribute to the discussion. For instructions on how to use this banner, please refer to the documentation.BiographyWikipedia:WikiProject BiographyTemplate:WikiProject Biographybiography
	This article is supported by the science and academia work group (assessed as Mid-importance).

Mathematics Mid‑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
Mid	This article has been rated as Mid-priority on the project's priority scale.

Germany Low‑importance

	Germany portal This article is within the scope of WikiProject Germany, a collaborative effort to improve the coverage of Germany 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.GermanyWikipedia:WikiProject GermanyTemplate:WikiProject GermanyGermany
Low	This article has been rated as Low-importance on the project's importance scale.

Dual number origin

Latest comment: 18 years ago1 comment1 person in discussion

According to B.L. van der Waerden's A History of Algebra (1985), it was William Kingdon Clifford that was using this planar algebra at first. A correct statement is that Eduard Study used dual number coefficients for quaternions to represent the Euclidean group of rigid motions. The reference given is Math. Annalen 39:441-566. Date 1891.Rgdboer 22:51, 30 August 2007 (UTC)Reply

date of his death

Latest comment: 15 years ago1 comment1 person in discussion

The thesis names January 3rd. Quite a few other sources speak about January 6th. The latter include . --Boobarkee (talk) 21:37, 17 August 2010 (UTC)Reply