#### Filter Results:

#### Publication Year

1989

2014

#### Publication Type

#### Co-author

#### Publication Venue

#### Key Phrases

Learn More

- SIMON DAVIS
- 2001

A rationality condition for the existence of odd perfect numbers is used to derive an upper bound for the density of odd integers such that σ (N) could be equal to 2N, where N belongs to a fixed interval with a lower limit greater than 10 300. The rationality of the square root expression consisting of a product of repunits multiplied by twice the base of… (More)

- S Morisot, A S Wayne, O Bohana-Kashtan, I M Kaplan, C D Gocke, R Hildreth +9 others
- Leukemia
- 2010

In order to develop a xenograft model to determine the efficacy of new therapies against primary human precursor-B acute lymphoblastic leukemia (ALL) stem cells (LSCs), we used the highly immunodeficient non-obese diabetic (NOD).Cg-Prkdc(scid)IL2rg(tmlWjl)/SzJ (NOD-severe combined immune deficient (scid) IL2rg(-/-)) mouse strain. Intravenous transplantation… (More)

- S. Davis, William A. Webb
- 1989

- Simon Davis
- 1997

Some general remarks are made about the quantum theory of scalar fields and the definition of momentum in curved space. Special emphasis is given to field theory in anti-de Sitter space, as it represents a maximally symmetric space-time of constant curvature which could arise in the local description of matter interactions in the small regions of… (More)

- Allan Cunliffe, Helen Heslop, Simon Davis, Andrew Wilson
- 2011

- Simon Davis
- 1998

The quantum cosmology of a higher-derivative gravity theory arising from the heterotic string effective action is reviewed. A new type of Wheeler-DeWitt equation is obtained when the dilaton is coupled to the quadratic curvature terms. Techniques for solving the Wheeler-DeWitt equation with appropriate boundary conditions shall be described, and… (More)

- Simon Davis
- 1996

With the standard fibre being a coset manifold, the transformation of a connection form in a fibre bundle under the action of the isometry group includes a dependence on the fibre coordinate. Elimination of the fibre coordinate from the transformation rule implies that the standard fibre is a Lie group and that the bundle is a principal bundle. The… (More)

- Simon Davis
- 1996

Symmetries of generalized gravitational actions, yielding field equations which typically involve at most second-order derivatives of the metric, are considered. The field equations for several different higher-derivative theories in the first-order formalism are derived, and variations of a generic set of higher-order curvature terms appearing in string… (More)