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177 papers · 1 filter
Effective descent for differential operators
Elie Compoint, Marius van der Put, Jacques-Arthur Weil
A theorem of N. Katz \cite{Ka} p.45, states that an irreducible differential operator over a suitable differential field , which has an isotypical decomposition over the alg…
De Sitter in Extended Supergravity
Diederik Roest, Jan Rosseel
We show that known de Sitter solutions in extended gauged supergravity theories are interrelated via a web of supersymmetry-breaking truncations. In particular, all N=8 models redu…
On massive gravitons in 2+1 dimensions
Eric Bergshoeff, Olaf Hohm, Paul Townsend
The Fierz-Pauli (FP) free field theory for massive spin 2 particles can be extended, in a spacetime of (1+2) dimensions (3D), to a generally covariant parity-preserving interacting…
The SAURON project - XV. Modes of star formation in early-type galaxies and the evolution of the red sequence
K. L. Shapiro, J. Falcon-Barroso, G. van de Ven +15
We combine SAURON integral field data of a representative sample of local early-type, red sequence galaxies with Spitzer/IRAC imaging in order to investigate the presence of trace…
The Cosmically Depressed: Life, Sociology and Identity of Voids
Rien van de Weygaert, Erwin Platen, Esra Tigrak +5
We review and discuss aspects of Cosmic Voids that form the background for our Void Galaxy Survey (see accompanying paper by Stanonik et al.). Following a sketch of the general cha…
Geometry and Morphology of the Cosmic Web: Analyzing Spatial Patterns in the Universe
Rien van de Weygaert, Miguel A. Aragon-Calvo, Bernard J. T. Jones +1
We review the analysis of the Cosmic Web by means of an extensive toolset based on the use of Delaunay and Voronoi tessellations. The Cosmic Web is the salient and pervasive foamli…