Subtracted geometry from Harrison transformations: II

Generating new supergravity solutions using Ehlers-Harrison-type transformations

The technique of generating new solutions to 4D gravity/matter systems by dimensional reduction to a σ-model is extended to supersymmetric configurations of supergravity. The conditions required for the preservation of supersymmetry under isometry transformations in the σ-model target space are found. Some examples illustrating the technique are given. e-mail: [email protected] e-mail: parviz@ph...

Ehlers-Harrison-type transformations in dilaton-axion gravity.

The ten–parametric internal symmetry group is found in the D = 4 Einstein– Maxwell–Dilaton–Axion theory restricted to space–times admitting a Killing vector field. The group includes dilaton–axion SL(2, R) duality and Harrison–type transformations which are similar to some target–space duality boosts, but act on a different set of variables. New symmetry is used to derive a seven–parametric fam...

Geometry II - Discrete Differential Geometry

Harrison 21_3

The expression of certain CD44 variants has been linked with metastasis and tumour progression. In particular, high molecular weight forms of CD44 show restricted expression in tumours and may correlate with tumour development and metastasis. In this study, we examined the expression of CD44 variants in prostate cancer cell lines: the invasive PC-3 and DU-145, low invasive LNCaP, and two non-in...

Ann Harrison