General Relativity and Gravitation

, Volume 43, Issue 1, pp 337–358 | Cite as

Republication of: Observations in cosmology

Open Access
Golden Oldie


This is a reprinting of a paper by Jerome Kristian and Rainer K. Sachs, first published in 1966, in which they proposed a power-series scheme for reading out various parameters of the Universe directly from observations in a model-independent way. The paper has been selected by the Editors of General Relativity and Gravitation for re-publication in the Golden Oldies series of the journal. This republication is accompanied by an editorial note written by George Ellis and by a brief biography of J. Kristian, compiled by A. Krasiński from internet sources.


General Relativity Open Access Differential Geometry Editorial Responsibility Kind Permission 
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Open Access

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

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© The Author(s) 2010

Authors and Affiliations

  1. 1.MadisonUSA
  2. 2.Department of MathematicsUniversity of CaliforniaBerkeleyUSA

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