Cosmological Principle

The Cosmological Principle which states that the Universe is always homogeneous and isotropic and leads to the Robertson-Walker metric... 

Barrow, J. D. and Tipler, F. J. (1986). The Anthropic Cosmological Principle. Oxford University Press. 

According to our current cosmological principles, any angular survey is expected to be statistically isotropic so that ensemble averages of product of 2 Fourier modes k(1) are expected to behave like,... 

John Barrow and Frank Tipler, in the Anthropic Cosmological Principle, are fascinated by the number of seemingly coincidental conditions, events, and physical constants that guide our Universe. For example, they find the number of coincidences involving 1039 remarkable. 

Quoted in John D. Barrow and Frank J. Tipler The Anthropic Cosmological Principle The Anthropic Principle and Biochemistry (p. 541)... 

J. D. Barrow and F. J. Tipler. The Anthropic Cosmological Principle. Oxford and New York Oxford University Press (1986) see also J. D. Barrow. The Artful Universe Expanded. Oxford and New York Oxford University Press (2005). 

In the 1930s Hubble discovered that galaxies on the whole are equally distributed in all directions of space as observed from the earth. Thus space — on a large scale — seem to be isotropic. This idea of uniformity of the universe is called the cosmological principle. 

Zimmerman, R. E. (1991). The Anthropic Cosmological Principle Philosophical Implications of Self-Reference. In Steen, L. A., ed., Mathematics Today Twelve Informal Essays (pp. 15-53). New York Springer. 

Barrow J.D. F.J. Tipler (1988) The Anthropic Cosmological Principle, University Press, Oxford, 1988. 

S. Weinberg. Gravitation and Cosmology Principles and Applications of the General Theory of Relativity. John WUey Sons, New York, 1972. 

Thus the universe as a whole can never return to its initial state. Remarkably, the Carnot analysis of heat engines has led to a formulation of a cosmological principle. The two laws of thermodynamics are best summarized by Rudolf Clausius ... 

J.D. Barrow, F.J. Tipler Anthropic Cosmological Principle" Cleradon, Oxford 1996... 

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