When to sell an indivisible object: Optimal timing with Markovian buyers
May 17, 2021
Economics
Theoretical Economics
We study the problem of when to sell an indivisible object. There is a
monopolistic seller who owns an indivisible object and plans to sell it over a
given span of time to the set of potential buyers whose valuations for the
object evolve o...
Quadrupole moment and thermopolarization effect
May 17, 2021
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Physics
Mesoscale and Nanoscale Physics
We discuss the polarization responses in insulators in relation to the
quadrupole moment. The quadrupole moment is defined as the response of the free
energy to the gradient of the electric field, and its spatial variation results
in the po...
Time-lag bias induced by unobserved heterogeneity: comparing treated
patients to controls with a different start of follow-up
May 17, 2021
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Statistics
Methodology
In comparative effectiveness research, treated and control patients might
have a different start of follow-up as treatment is often started later in the
disease trajectory. This typically occurs when data from treated and controls
are not c...
Abelian covers and second fundamental form
May 17, 2021
Mathematics
Algebraic Geometry
We give some conditions on a family of abelian covers of P1 of
genus g curves, that ensure that the family yields a subvariety of Ag which is not totally geodesic, hence it is not Shimura. As a consequence,
we sh...
Symmetric mutations algebras in the context of sub-cluster algebras
May 17, 2021
Mathematics
Representation Theory
For a rooted cluster algebra A(Q) over a valued quiver Q, a
\emph{symmetric cluster variable} is any cluster variable belonging to a
cluster associated with a quiver σ(Q), for some permutation σ.
The subalgebra ...
Uniform Inference on High-dimensional Spatial Panel Networks
May 16, 2021
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Economics
Statistics
Econometrics
Methodology
Econometrics
Methodology
We propose employing a debiased-regularized, high-dimensional generalized
method of moments (GMM) framework to perform inference on large-scale spatial
panel networks. In particular, network structure with a flexible sparse
deviation, which...
Decision Making with Differential Privacy under a Fairness Lens
May 16, 2021
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Computer Science
Artificial Intelligence
Computers and Society
Machine Learning
Artificial Intelligence
Computers and Society
Machine Learning
Agencies, such as the U.S. Census Bureau, release data sets and statistics
about groups of individuals that are used as input to a number of critical
decision processes. To conform to privacy and confidentiality requirements,
these agencies...
More than 60% of zeros of Dirichlet L-functions are on the critical
line
May 16, 2021
Mathematics
Number Theory
In this paper, we estimate the proportion of zeros of Dirichlet L-functions
on the critical line. Using Feng's mollifier and an asymptotic formula for the
mean square of Dirichlet L-functions, we prove that averaged over primitive
chara...
A surrogate model for studying random field energy release rates in 2D
brittle fractures
May 16, 2021
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Physics
Materials Science
This article proposes a weighted-variational model as an approximated
surrogate model to lessen numerical complexity and lower the execution times of
brittle fracture simulations. Consequently, Monte Carlo studies of brittle
fractures becom...
MHV amplitudes and BCFW recursion for Yang-Mills theory in the de Sitter
static patch
May 16, 2021
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Physics
High Energy Physics - Theory
General Relativity and Quantum Cosmology
We study the scattering problem in the static patch of de Sitter space, i.e.
the problem of field evolution between the past and future horizons of a de
Sitter observer. We formulate the problem in terms of off-shell fields in
Poincare coor...