Results 111 to 120 of about 1,100,944 (211)
Information‐Theoretic Approach to Financial Market Modeling
Mathematical Finance, EarlyView.ABSTRACT The paper treats the financial market as a communication system, using four information‐theoretic assumptions to derive an idealized model with only one parameter. State variables are scalar stationary diffusions. The model maximizes the surprisal of the market and minimizes the Kullback–Leibler divergence between the benchmark‐neutral pricing
Eckhard Platen
wiley +1 more source
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
Computational and Systems Oncology, Volume 6, Issue 1, December 2026.ABSTRACT Rare cancers collectively represent 20%–25% of all malignancies yet yield fewer than 50 annotated whole‐slide images (WSIs) per subtype in publicly available archives, rendering supervised deep learning inapplicable. We present HierAnom‐Path, to the best of our knowledge, the first framework for zero‐shot rare cancer anomaly detection in ...
Noora Saleem Jumaah +5 more
wiley +1 more source
Inverse problems for semilinear elliptic PDE with a general nonlinearity a(x,u)$a(x,u)$
Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.Abstract This article studies the inverse problem of recovering a nonlinearity in an elliptic equation Δu+a(x,u)=0$\Delta u + a(x,u) = 0$ from boundary measurements of solutions. Previous results based on first‐order linearization achieve this under a sign condition on ∂ua(x,u)$\partial _u a(x,u)$, and results based on higher order linearization ...
David Johansson +2 more
wiley +1 more source
Plurisubharmonic domination in Fréchet spaces
, 2012 In a class of Fréchet spaces that includes the space s of rapidly decreasing sequences, this dissertation shows that in a uniformly open pseudoconvex set then for any locally bounded function u there exists a continuous plurisubharmonic function v such ...
Wegman, Nicholas
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Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.Abstract The Pamir, located at the northwestern margin of the Tibetan Plateau, is undergoing E–W extension within its interior, accommodated by micro‐block motions along major fault systems; however, the mechanisms governing this modern block kinematics remain elusive.
Bingfeng Zhang +3 more
wiley +1 more source
I-Fréchet-Urysohn property in Cα(X)
Applied General TopologyIn this paper, we introduce I-Fr´echet-Urysohn, strongly I-Fr´echet-Urysohn and strictly I-Fr´echet-Urysohn spaces, discuses their properties of countable tightness and mappings that preserve these spaces.
Xiangeng Zhou
doaj +1 more source
Mathematical Methods in the Applied Sciences, Volume 49, Issue 13, Page 14964-15009, 15 September 2026.ABSTRACT We develop a unified mathematical framework extending classical moment theory from discrete integer orders to a continuous spectrum of real orders f>0$$ f>0 $$, providing a systematic statistical characterization of complex systems exhibiting power‐law behavior.
Farrukh A. Chishtie
wiley +1 more source
Variance Inequalities for Transformed Fréchet Means in Hadamard Spaces [PDF]
The Fréchet mean (or barycenter) generalizes the expectation of a random variable to metric spaces by minimizing the expected squared distance to the random variable.
Schötz, Christof
core
On Power Series Subspaces of Certain Nuclear Fréchet Spaces [PDF]
. The diametral dimension, (E), and the approximate diametral dimension, (E) of an element E of a large class of nuclear Fréchet spaces are set theoretically between the corresponding invariant of power series spaces 1(") and 1(") for some ...
Doğan, Nazlı
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