Results 41 to 50 of about 15,759 (147)

Variational Lie algebroids and homological evolutionary vector fields

, 2011
We define Lie algebroids over infinite jet spaces and establish their equivalent representation through homological evolutionary vector fields.Comment: Int.
A. Kumpera, A. N. Leznov, A. V. Bocharov, A. V. Kiselev, A. V. Kiselev, A. V. Kiselev, A. V. Kiselev, A. V. Kiselev, A. V. Kiselev, A. V. Zhiber, A. Yu. Vaintrob, B. A. Kupershmidt, C. P. Boyer, J. W. van de Leur, J.-C. Herz, M. Alexandrov, M. Nesterenko, P. A. M. Dirac, P. J. Olver, P. Kersten, P. Kersten, T. Lada, T. Voronov, V. A. Golovko, Y. Kosmann-Schwarzbach, Y. Kosmann-Schwarzbach   +25 more
core   +2 more sources

Confidence intervals for extinction risk: Validating population viability analysis with limited data

Methods in Ecology and Evolution, EarlyView.
Abstract The assessment of extinction risk remains a key component of IUCN and CITES evaluations. However, it has been argued that, under realistic data limitations, confidence intervals (CIs) for extinction probability often span the entire 0–1 range, rendering such assessments meaningless.
Hiroshi Hakoyama
wiley   +1 more source

Supersymmetric extensions of Schr\"odinger-invariance

, 2005
The set of dynamic symmetries of the scalar free Schr\"odinger equation in d space dimensions gives a realization of the Schr\"odinger algebra that may be extended into a representation of the conformal algebra in d+2 dimensions, which yields the set of ...
Baumann, Beckers, Beckers, Beckers, Belavin, Berche, Burdet, Cherniha, de Crombrugghe, Dolan, Dufour, Duval, Duval, Freed, Gauntlett, Ghosh, Ghosh, Guieu, Guillemin, Hagen, Hassaïne, Hassaïne, Henkel, Henkel, Henkel, Henkel, Henkel, Jackiw, Jackiw, Junker, Jérémie Unterberger, Kac, Kastrup, Knapp, Kogan, Leblanc, Lozano, Lévy-Leblond, Malte Henkel, Nagi, Neveu, Niederer, O'Raifeartaigh, Park, Picone, Pleimling, Roger, Stoimenov, Tailleur   +48 more
core   +1 more source

Neural Local Inter‐reflection Modeling for Garment Fold Rendering

Computer Graphics Forum, EarlyView.
Abstract Realistic garment rendering requires simulating complex multi‐bounce light paths within intricate fold geometries. In these regions, conventional path tracing is computationally expensive as light becomes trapped, necessitating high bounce counts for convergence.
Jooeun Son, Nuri Ryu, Gyoonseo Kim, Joo Ho Lee, Seungyong Lee   +4 more
wiley   +1 more source

Higgs and Coulomb branches from vertex operator algebras

, 2018
We formulate a conjectural relation between the category of line defects in topologically twisted 3d ${\cal N} = 4$ supersymmetric quantum field theories and categories of modules for Vertex Operator Algebras of boundary local operators for the theories.
Costello, Kevin, Creutzig, Thomas, Gaiotto, Davide   +2 more
core   +1 more source

Hierarchical Optimization of the As‐Rigid‐As‐Possible Energy

Computer Graphics Forum, EarlyView.
Abstract The As‐Rigid‐As‐Possible (ARAP) energy [SA07] has become a versatile ingredient in various geometry processing and machine learning methods. The classic method for its minimization is a block coordinate descent, alternating between local rotation estimation and a global linear solve, which converges slowly for large problem instances.
Hendrik Meyer, Bernd Bickel, Marc Alexa
wiley   +1 more source

The Legacy of Policy Inaction in Climate‐Growth Models

International Economic Review, EarlyView.
ABSTRACT To better understand the structure and core mechanisms of a broad class of climate‐growth models, we study a simplified version of the dynamic integrated model of climate and the economy (DICE) through the lens of growth theory. We analytically show that this model features a continuum of saddle‐point stable steady states.
Thomas Steger, Timo Trimborn
wiley   +1 more source

Shapovalov determinant for loop superalgebras

, 2013
Let a given finite dimensional simple Lie superalgebra g possess an even invariant non-degenerate supersymmetric bilinear form. We show how to recover the quadratic Casimir element for the Kac-Moody superalgebra related to the loop superalgebra with ...
Lebedev, Alexei, Leites, Dimitry
core  

What Are Asset Price Bubbles? A Survey on Definitions of Financial Bubbles

Journal of Economic Surveys, EarlyView.
ABSTRACT Financial bubbles and crashes have repeatedly caused economic turmoil notably but not just during the 2008 financial crisis. However, both in the popular press as well as scientific publications, the meaning of bubble is sometimes unspecified.
Michael Heinrich Baumann, Anja Janischewski   +1 more
wiley   +1 more source

Geometric flows and (some of) their physical applications

, 2005
The geometric evolution equations provide new ways to address a variety of non-linear problems in Riemannian geometry, and, at the same time, they enjoy numerous physical applications, most notably within the renormalization group analysis of non-linear ...
Bakas, I.
core