Meta-analysis aims to generalize results from multiple related statistical
analyses through a combined analysis. While the natural outcome of a Bayesian
study is a posterior distribution, traditional Bayesian meta-analyses proceed
by combin...
Varieties of *-regular rings
April 9, 2019
Mathematics
Rings and Algebras
Given a subdirectly irreducible *-regular ring R, we show that R is a
homomorphic image of a regular *-subring of an ultraproduct of the (simple)
eRe, e in the minimal ideal of R; moreover, R (with unit) is directly finite if
all eRe are un...
A Concept-Value Network as a Brain Model
April 9, 2019
Computer Science
Quantitative Biology
Neural and Evolutionary Computing
Artificial Intelligence
Neurons and Cognition
This paper suggests a statistical framework for describing the relations
between the physical and conceptual entities of a brain-like model. Features
and concept instances are put into context, where the paper suggests that
features may be ...
Precise asymptotics near a generic S1×R3
singularity of mean curvature flow
April 8, 2019
|
Mathematics
Differential Geometry
Analysis of PDEs
In the present paper we study a type of generic singularity of mean curvature
flow modelled on the bubble-sheet S1×R3 , and we
derive an asymptotic profile for a neighborhood of singularity....
Adiabatic Limit, Theta Function, and Geometric Quantization
April 8, 2019
Mathematics
Symplectic Geometry
Differential Geometry
Let π:(M,ω)→B be a non-singular Lagrangian torus fibration
on a complete base B with prequantum line bundle (L,∇L)→(M,ω). Compactness on M is not assumed. For a positive integer N and
a comp...
The Superstatistics of confined ants: From serenity to panic
April 5, 2019
| | | | | |
Quantitative Biology
Populations and Evolution
Nonequilibrium systems with strong parameter fluctuations are difficult to
describe with ordinary Statistical Mechanics. Superstatistics -- that can be
seen as statistics of an statistics -- has emerged as a tool able to describe
these comp...
Majorana stellar representation for mixed-spin (s,21) systems
April 4, 2019
| | | |
Physics
Quantum Physics
By describing the evolution of a quantum state with the trajectories of the
Majorana stars on a Bloch sphere, Majorana's stellar representation provides an
intuitive geometric perspective to comprehend a quantum system with
high-dimensional...
Two dimensional Nearly de Sitter gravity
April 3, 2019
| | | | |
Physics
High Energy Physics - Theory
General Relativity and Quantum Cosmology
High Energy Physics - Theory
General Relativity and Quantum Cosmology
We study some aspects of the de Sitter version of Jackiw-Teitelboim gravity.
Though we do not have propagating gravitons, we have a boundary mode when we
compute observables with a fixed dilaton and metric at the boundary. We compute
the no...
A Simple Joint Model for Improved Contextual Neural Lemmatization
April 3, 2019
| |
Computer Science
Computation and Language
English verbs have multiple forms. For instance, talk may also appear as
talks, talked or talking, depending on the context. The NLP task of
lemmatization seeks to map these diverse forms back to a canonical one, known
as the lemma. We pres...
Projection of root systems
April 3, 2019
Mathematics
Representation Theory
Let a be a real euclidean vector space of finite dimension and Σ a
root system in a with a basis Δ. Let Θ⊂Δ and M=MΘ be a standard Levi of a reductive group G such that $a_\Theta =
a_M / a...