The Emergence of Anticommuting Coordinates and the Dirac-Ramond-Kostant operators

The history of anticommuting coordinates is decribed.Comment: 14 pages, Contribution to the Proceedings of The Gunnar Nordstr\"om Symposium on Theoretical Physics - The Physics of Extra Dimension

Sun and Lightning: The Visibility of Radiance

A long chapter for The War of Appearances: Transparency, Opacity, Radiance (V2_Publishing, 2016) building on the findings of “Charis and Radiance,” an essay published two years earlier. It discusses the inherent connection between visibility and radiance within the framework of Plato’s sun model as the source of reality. The argument develops a system where transcendent verticality and earthly horizontality together construct an “arena of presence” in which things flood each other with light, absorbing and returning portions of it in a circular economy similar to gift exchange

LLAMA: Leveraging Learning to Automatically Manage Algorithms

Algorithm portfolio and selection approaches have achieved remarkable improvements over single solvers. However, the implementation of such systems is often highly customised and specific to the problem domain. This makes it difficult for researchers to explore different techniques for their specific problems. We present LLAMA, a modular and extensible toolkit implemented as an R package that facilitates the exploration of a range of different portfolio techniques on any problem domain. It implements the algorithm selection approaches most commonly used in the literature and leverages the extensive library of machine learning algorithms and techniques in R. We describe the current capabilities and limitations of the toolkit and illustrate its usage on a set of example SAT problems

E-learning guideline for submission of QLIF publications to Organic Eprints

Following a workshop at the 3rd QLIF congress, a tutorial 5-min speakshow on submission of papers to Organic Eprints archive has been produce

Decoupling of beams previously coupled by effective stand-alone solenoid fringe fields

Beams passing through a solenoid fringe field experience x-y coupling and change of their eigen-emittances. As reported previously (C.~Xiao et al., Phys. Rev. ST Accel. Beams 044201, {\bf 16} 2013) constant settings of a subsequent decoupling section can be found such that variation of the fringe field strength will not change the Twiss parameters $\beta$ and $\alpha$ in both transverse planes at the exit of the decoupling section. For time being this feature was understood for a generic beam line but not to the generality to which it is observed. This report is on explanation of the convenient decoupling of fringe-coupled beams by any beam line that provides decoupling. For better coherence this report includes recapitulation of previous works.Comment: 4 pages, 3 figures, typos fixe