The supremum of the symmetric difference x y := (x \ y) βͺ (y \ x) of subsets x, y of R satisfies the so-called four-point condition; that is, for all x, x , y, y β R, one has It follows that the set E of all subsets of R which are bounded from above forms a valuated matroid relative to the map v:
Noether symmetric minisuperspace model of f(R) cosmology
β Scribed by B. Vakili
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 117 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0003-3804
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