A globally conservative finite element MHD code and its application to
the study of compact torus formation, levitation and magnetic compression
July 30, 2019
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Mathematics
Computer Science
Physics
Numerical Analysis
Numerical Analysis
Plasma Physics
The DELiTE (Differential Equations on Linear Triangular Elements) framework
was developed for spatial discretisation of partial differential equations on
an unstructured triangular grid in axisymmetric geometry. The framework is
based on di...
FDive: Learning Relevance Models using Pattern-based Similarity Measures
July 29, 2019
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Computer Science
Statistics
Machine Learning
Machine Learning
The detection of interesting patterns in large high-dimensional datasets is
difficult because of their dimensionality and pattern complexity. Therefore,
analysts require automated support for the extraction of relevant patterns. In
this pap...
Developing Workforce with Mathematical Modeling Skills
July 28, 2019
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Mathematics
History and Overview
Mathematicians have traditionally been a select group of academics that
produce high-impact ideas allowing substantial results in several fields of
science. Throughout the past 35 years, undergraduates enrolling in mathematics
or statistics...
Variational f-divergence Minimization
July 27, 2019
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Statistics
Computer Science
Machine Learning
Machine Learning
Machine Learning
Machine Learning
Probabilistic models are often trained by maximum likelihood, which
corresponds to minimizing a specific f-divergence between the model and data
distribution. In light of recent successes in training Generative Adversarial
Networks, alterna...
Blocking Bandits
July 27, 2019
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Computer Science
Statistics
Machine Learning
Machine Learning
We consider a novel stochastic multi-armed bandit setting, where playing an
arm makes it unavailable for a fixed number of time slots thereafter. This
models situations where reusing an arm too often is undesirable (e.g. making
the same pro...
Stringy K\"ahler moduli, mutation and monodromy
July 25, 2019
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Mathematics
Physics
Algebraic Geometry
High Energy Physics - Theory
This paper gives the first description of derived monodromy on the stringy
K\"ahler moduli space (SKMS) for a general irreducible flopping curve C in a
3-fold X with mild singularities. We do this by constructing two new infinite
helices: t...
Rigid analytic reconstruction of Hyodo--Kato theory
July 25, 2019
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Mathematics
Number Theory
We give a new and very intuitive construction of Hyodo--Kato cohomology and
the Hyodo--Kato map, based on logarithmic rigid cohomology. We show that it is
independent of the choice of a uniformiser and study its dependence on the
choice of ...
Ribbonness of a stable-ribbon surface-link, II. General case
July 23, 2019
Mathematics
Geometric Topology
It is shown that any handle-irreducible summand of every stable-ribbon
surface-link is a unique ribbon surface-link up to equivalences. This is a
generalization of a previously observed result for a stably trivial
surface-link. Two applicat...
Inductive dimensions of coarse proximity spaces
July 23, 2019
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Mathematics
General Topology
In this paper, we generalize Dranishnikov's asymptotic inductive dimension to
the setting of coarse proximity spaces. We show that in this more general
context, the asymptotic inductive dimension of a coarse proximity space is
bigger or equ...
Lensing convergence and anisotropic dark energy in galaxy redshift
surveys
July 23, 2019
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Physics
Cosmology and Nongalactic Astrophysics
Analyses of upcoming galaxy surveys will require careful modelling of
relevant observables such as the power spectrum of galaxy counts in harmonic
space Cℓ(z,z′). We investigate the impact of disregarding relevant
relativistic effects...