Results 171 to 180 of about 64,214 (233)

Life as Counterfactual Geometry: An Adversarial Theory of Biological Function. [PDF]

open access: yesEntropy (Basel)
Buzea CG   +7 more
europepmc   +1 more source

Detecting Relevant Deviations From the White Noise Assumption for Non‐Stationary Time Series

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT We consider the problem of detecting deviations from a white noise assumption in time series. Our approach differs from the numerous methods proposed for this purpose with respect to two aspects. First, we allow for non‐stationary time series. Second, we address the problem that a white noise test is usually not performed because one believes ...
Patrick Bastian
wiley   +1 more source

Coarse entropy of metric spaces. [PDF]

open access: yesGeom Dedic
Geller W, Misiurewicz M, Sawicki D.
europepmc   +1 more source

The fundamental theorem of asset pricing with and without transaction costs

open access: yesMathematical 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

open access: yesMathematical 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

Herbarium specimens reveal a constrained seasonal climate niche despite diverged annual climates across a wildflower clade. [PDF]

open access: yesProc Natl Acad Sci U S A
Bontrager M   +7 more
europepmc   +1 more source

(Re)Defining language pedagogy activity: A sociomaterialist perspective

open access: yesThe Modern Language Journal, EarlyView.
Abstract Language pedagogy activity (LPA) is central to the functioning of language classrooms worldwide, and this article (re)defines LPA. While prevailing applied linguistics conceptualizations of “activity” are often theoretical and anthropocentric, our definition of LPA is empirically supported and foregrounds material agency.
Anne Marie Guerrettaz   +3 more
wiley   +1 more source

Is A Little Learning Dangerous?

open access: yesNoûs, EarlyView.
ABSTRACT I argue that a little learning is often dangerous even for ideal reasoners who are operating in extremely simple scenarios and know all the relevant facts about how the evidence is generated. More precisely, I show that, on many plausible ways of assigning value to a credence in a hypothesis H, ideal Bayesians should sometimes expect other ...
Bernhard Salow
wiley   +1 more source

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