Results 191 to 200 of about 34,452,769 (227)
Word Predictability as a Measure of Second Language Proficiency
Language Learning, EarlyView.Abstract This study introduces predictabilityBERT, a novel metric for assessing second language (L2) proficiency based on the predictability of word choices in learner language production. Using BERT (Devlin et al., 2019), we calculated the conditional probability of each word in a text given its surrounding context.
Langdon Holmes +3 more
wiley +1 more source
Measure‐valued processes for energy markets
Mathematical Finance, Volume 35, Issue 2, Page 520-566, April 2025.Abstract We introduce a framework that allows to employ (non‐negative) measure‐valued processes for energy market modeling, in particular for electricity and gas futures. Interpreting the process' spatial structure as time to maturity, we show how the Heath–Jarrow–Morton approach can be translated to this framework, thus guaranteeing arbitrage free ...
Christa Cuchiero +3 more
wiley +1 more source
The fundamental theorem of asset pricing with and without transaction costs
Mathematical Finance, Volume 35, Issue 2, Page 567-609, April 2025.Abstract We prove a version of the fundamental theorem of asset pricing (FTAP) in continuous time that is based on the strict no‐arbitrage condition and that is applicable to both frictionless markets and markets with proportional transaction costs. We consider a market with a single risky asset whose ask price process is higher than or equal to its ...
Christoph Kühn
wiley +1 more source
Optimal Portfolio Choice With Cross‐Impact Propagators
Mathematical Finance, EarlyView.ABSTRACT We consider a class of optimal portfolio choice problems in continuous time where the agent's transactions create both transient cross‐impact driven by a matrix‐valued Volterra propagator, as well as temporary price impact. We formulate this problem as the maximization of a revenue‐risk functional, where the agent also exploits available ...
Eduardo Abi Jaber +2 more
wiley +1 more source
A generalized interpolation inequality and its application to the stabilization of damped equations. [PDF]
Soria, Fernando, Bégout, Pascal
core
Risk Measure Duality Without Structure
Mathematical Finance, EarlyView.ABSTRACT We study risk measures on vector spaces of random variables which a priori have little structure, such as spaces lacking law invariance or a lattice structure. Ensuring the existence of a tractable dual representation (one which does not contain non‐sigma‐additive measures) is one of the main problems in risk measure theory, and we address it ...
Vasily Melnikov
wiley +1 more source
HELICOIDAL SURFACES WITH POINTWISE 1-TYPE GAUSS MAP [PDF]
Journal of the Korean Mathematical Society, 2009 The helicoidal surfaces with pointwise 1-type or harmonic gauss map in Euclidean 3-space are studied. The notion of pointwise 1- type Gauss map is a generalization of usual sense of 1-type Gauss map. In particular, we prove that an ordinary helicoid is the only genuine he- licoidal surface of polynomial kind with pointwise 1-type Gauss map of the flrst
Mie-Kyung Choi +2 more
exaly +2 more sources
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Ruled surfaces with pointwise 1-type Gauss map
Journal of Geometry and Physics, 2000It is known that the Gauss map \(G\) of a submanifold \(M\) in a pseudo-Euclidean \(m\)-space \(\mathbb E^m_s\) with index \(s\) satisfies \(\Delta G=\lambda G\) for some constant \(\lambda\) if \(M\) has 1-type Gauss map, where \(\Delta\) is the Laplacian of \(M\) [cf. \textit{B.-Y. Chen} and \textit{P. Piccinni}, Bull. Aust. Math. Soc.
Kim, Young Ho, Yoon, Dae Won
openaire +1 more source
Classifications of Canal Surfaces with L1-Pointwise 1-Type Gauss Map
Milan Journal of Mathematics, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qian, Jinhua, Kim, Young Ho
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Invariant surfaces with pointwise 1-type Gauss map in Sol3
Journal of Geometry, 2015zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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