Results 71 to 80 of about 474 (178)
Mathematical Finance, EarlyView.ABSTRACT We study a dynamic portfolio optimization problem under the mean–variance–variance (M‐V‐V) criterion proposed by Maccheroni et al. It is an analogue of the Arrow–Pratt approximation to the well‐known smooth ambiguity model. Under the standard Black–Scholes framework, we derive fully explicit equilibrium investment strategies in which a DM's ...
David Landriault, Bin Li, Yuanyuan Zhang
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Topics in Cognitive Science, EarlyView.Abstract Our ability to imagine alternatives to reality is central to everyday cognition. Our competence in reasoning depends not only on our capacity to envisage the relevant facts, but also on our proficiency in simulating alternatives to them. I discuss how our skill in making deductive inferences depends on imagining possibilities. To illustrate, I
Ruth M. J. Byrne
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Self‐Similar Blowup for the Cubic Schrödinger Equation
Communications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1831-1918, August 2026.ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
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Thinking Is Not Enough: The B* Expansion Technique for Enhancing Autonomous LLM Agents
Expert Systems, Volume 43, Issue 8, August 2026.ABSTRACT Most autonomous agents built on large language models (LLMs) focus on improving internal reasoning while assuming a fixed and complete set of primitive actions. In this work, we challenge this assumption and introduce the B*$$ {B}^{\ast } $$ expansion technique, an action‐centric method that enables agents to iteratively construct new actions ...
Sebastián Andrés Mayorquín Posadas +1 more
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Nonmonotonic Reasoning in FLORA-2 [PDF]
, 2005 FLORA-2 is an advanced knowledge representation system that integrates F-logic, HiLog, and Transaction Logic. In this paper we give an overview of the theoretical foundations of the system and of some of the aspects of nonmonotonic reasoning in FLORA-2.
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The Journal of Finance, Volume 81, Issue 4, Page 2005-2062, August 2026.ABSTRACT We propose a measure of the valuation gap between debt and equity—debt‐equity spread (DES)—based on the difference between actual and equity‐implied credit spreads. DES predicts cross‐sectional stock and bond returns in opposite directions.
HUI CHEN, ZHIYAO CHEN, JUN LI
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Nonmonotonic Reasoning as a Temporal Activity
CoRR, 2014 Proceedings of the 15th International Workshop on Non-Monotonic Reasoning (NMR 2014), Vienna, Austria, 17-19 July ...
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Batteries &Supercaps, Volume 9, Issue 7, July 2026.A single‐lineage series of CO2‐activated carbons reveals how surface area, pore architecture, and defect density govern near‐neutral Zn–air battery cathodes. Moderate activation at 75% burn‐off balances energy efficiency and cyclability, whereas deeper activation increases power through mesopore formation but compromises durability. Zinc–air batteries (
Masato Sonoo +4 more
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Earthquake Engineering &Structural Dynamics, Volume 55, Issue 9, Page 1811-1827, 25 July 2026.ABSTRACT Multivariate ground motion models (GMMs) that capture the correlation between different intensity measures (IMs) are essential for seismic risk assessment. Conventional GMMs are often developed using a two‐stage approach, where separate univariate models with predefined functional forms are fitted first, and correlation is addressed in a ...
Sayed Mohammad Sajad Hussaini +2 more
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ChemistryOpen, Volume 15, Issue 7, July 2026.A simple Cu modification transforms the performance of PbO2 anodes. Increased electroactive surface area, accelerated charge transfer, and enhanced hydroxyl‐radical utilization drive efficient cephalexin degradation while improving electrode durability.
Haijie Li +3 more
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