Results 61 to 70 of about 1,299 (185)

Topics in the General Topology of Non-metric Manifolds

open access: yes, 2014
The main core of this thesis is the general topology of non-metrisable manifolds. Although our emphasis was studying non-metrisable topological manifolds, we did not hesitate to consider topological properties which are useful in studying manifolds in a ...
Mardani, Afshin
core  

The sigma-isotypic decomposition and the sigma-index of reversible-equivariant systems

open access: yes, 2012
This work is concerned with dynamical systems in presence of symmetries and reversing symmetries. We describe a construction process of subspaces that are invariant by linear Gamma-reversible-equivariant mappings, where Gamma is the compact Lie group of ...
Manoel, Miriam   +4 more
core   +1 more source

A contribution to fuzzy subspaces [PDF]

open access: yes, 2002
We give a new concept of fuzzy topological subspace, which extends the usual one, and study in it the related concepts of interior, closure and ...
Alamar, Miguel   +3 more
core   +1 more source

Measure‐valued processes for energy markets

open access: yesMathematical 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

Relative Arbitrage Opportunities With Interactions Among N Investors

open access: yesMathematical Finance, EarlyView.
ABSTRACT The relative arbitrage portfolio outperforms a benchmark portfolio over a given time‐horizon with probability one. With market price of risk processes depending on the market portfolio and investors, this paper analyzes the multi‐agent optimization of relative arbitrage opportunities in the coupled system of market and wealth dynamics.
Tomoyuki Ichiba, Nicole Tianjiao Yang
wiley   +1 more source

Inference on the Attractor Space via Functional Approximation

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT This paper discusses semiparametric inference on hypotheses on the cointegration and the attractor spaces for I(1)$$ I(1) $$ linear processes with moderately large cross‐sectional dimension. The approach is based on sample canonical correlations and functional approximation of Brownian motions, and it can be applied both to the whole system ...
Massimo Franchi, Paolo Paruolo
wiley   +1 more source

Sequence‐Encoded Frustration Directs the Formation of Abridged G‐Quadruplex Architectures

open access: yesAngewandte Chemie, Volume 138, Issue 25, 15 June 2026.
Programmable frustration reshapes the free‐energy surface (FES) of guanine‐quadruplex (G4) folding, stabilizing an abridged G4 and a G‐triplex intermediate. ABSTRACT Frustration—competing interactions that cannot be simultaneously optimized—shapes energy landscapes in proteins and soft matter, but has rarely been exploited as a programmable design ...
Yuncheng Qian   +6 more
wiley   +2 more sources

A zero-dimensional Moore space without dense normal subspaces

open access: yes, 2002
In this note we give an affirmative answer to the following problem of Arhangel'skii: does there exists a first countable Tychonoff space such that no dense subspace of X is normal
FEDELI, Alessandro
core  

Weighted composition semigroups on spaces of continuous functions and their subspaces

open access: yes
This paper is dedicated to weighted composition semigroups on spaces of continuous functions and their subspaces. We consider semigroups induced by semiflows and semicocycles on Banach spaces $\mathcal{F}(\Omega)$ of continuous functions on a Hausdorff ...
Kruse, Karsten; id_orcid, Kruse, Karsten
core   +1 more source

Inference on Common Trends in a Cointegrated Nonlinear SVAR

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT We consider the problem of performing inference on the number of common stochastic trends when data is generated by a cointegrated CKSVAR (a two‐regime, piecewise affine SVAR; Mavroeidis, 2021), using a modified version of the Breitung (2002) multivariate variance ratio test that is robust to the presence of nonlinear cointegration (of a known
James A. Duffy, Xiyu Jiao
wiley   +1 more source

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