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In his comment, Riemann defends the conventional kinetic Bohm criterion on the basis that the underlying approximations become rigorous in the limit \lambda_D/l \rightarrow 0, where \lambda_D is the Deybe length and l is a collision length…

等离子体物理 · 物理学 2012-12-19 S D Baalrud , C C Hegna

Optimality Theory is a constraint-based theory of phonology which allows constraints to be violated. Consequently, implementing the theory presents problems for declarative constraint-based processing frameworks. On the basis of two…

cmp-lg · 计算机科学 2008-02-03 T. Mark Ellison

Randomized higher-order computation can be seen as being captured by a lambda calculus endowed with a single algebraic operation, namely a construct for binary probabilistic choice. What matters about such computations is the probability of…

计算机科学中的逻辑 · 计算机科学 2020-12-24 Ugo Dal Lago , Claudia Faggian , Simona Ronchi Della Rocca

For an infinite-horizon continuous-time optimal stopping problem under non-exponential discounting, we look for an optimal equilibrium, which generates larger values than any other equilibrium does on the entire state space. When the…

最优化与控制 · 数学 2021-07-15 Yu-Jui Huang , Zhou Zhou

We study $L^p(\mu) \to L^q(\nu)$ mapping properties of the convolution operator $ T_{\lambda}f(x)=\lambda*(f\mu)(x)$ and of the corresponding maximal operator $ {\mathcal T}_{\lambda}f(x)=\sup_{t>0} |\lambda_t*(f\mu)(x)|$, where $\lambda$…

经典分析与常微分方程 · 数学 2015-11-17 Alex Iosevich , Ben Krause , Eric Sawyer , Krystal Taylor , Ignacio Uriarte-Tuero

We show, assuming the consistency of one measurable cardinal, that it is consistent for there to be exactly kappa+ many normal measures on the least measurable cardinal kappa. This answers a question of Stewart Baldwin. The methods…

逻辑 · 数学 2007-05-23 Arthur W. Apter , James Cummings , Joel David Hamkins

If cf(kappa) = kappa, kappa^+< cf(lambda) = \lambda, then there is a stationary subset S of {delta<lambda:cf(delta)=kappa} in I[lambda]. Moreover, we can find <C_delta :delta in S>, C_delta a club of lambda, otp(C_delta)=kappa, guessing…

逻辑 · 数学 2008-06-03 Saharon Shelah

A general condition determining the optimal performance of a complex system has not yet been found and the possibility of its existence is unknown. To contribute in this direction, an optimization algorithm as a complex system is presented.…

计算复杂性 · 计算机科学 2007-05-23 Victor Korotkikh , Galina Korotkikh , Darryl Bond

For a cardinal of the form $\kappa=\beth_\kappa$, Shelah's logic $L^1_\kappa$ has a characterisation as the maximal logic above $\bigcup_{\lambda<\kappa} L_{\lambda, \omega}$ satisfying Strong Undefinability of Well Order (SUDWO). SUDWO is…

逻辑 · 数学 2021-07-22 Mirna Džamonja , Jouko Väänänen

In [5] I solved the Thom's conjecture that a proper Thom map is triangulable. In this paper I drop the properness condition in the semialgebraic case and, moreover, in the definable case in an o-minimal structure.

几何拓扑 · 数学 2010-06-25 Masahiro Shiota

We designed a superposition calculus for a clausal fragment of extensional polymorphic higher-order logic that includes anonymous functions but excludes Booleans. The inference rules work on $\beta\eta$-equivalence classes of…

计算机科学中的逻辑 · 计算机科学 2021-02-02 Alexander Bentkamp , Jasmin Blanchette , Sophie Tourret , Petar Vukmirović , Uwe Waldmann

This paper focuses on the general linearly constrained optimization problem: $\min_{x \in \mathbb{R}^d} f(x) \ \text{s.t.} \ Ax = b$, where $f: \mathbb{R}^d \rightarrow \mathbb{R} \cup \{+\infty\}$ is a closed proper convex function, $A \in…

最优化与控制 · 数学 2026-05-20 Jingwang Li , Vincent Lau

We develop algorithms for private stochastic convex optimization that adapt to the hardness of the specific function we wish to optimize. While previous work provide worst-case bounds for arbitrary convex functions, it is often the case…

机器学习 · 计算机科学 2021-08-06 Hilal Asi , Daniel Levy , John Duchi

The optimal (Monge-Kantorovich) transportation problem is discussed from several points of view. The Lagrangian formulation extends the action of the {\em Lagrangian} $L(v,x,t)$ from the set of orbits in $\R^n$ to a set of measure-valued…

数学物理 · 物理学 2007-05-23 Gershon Wolansky

We investigate generalizations of the topology of the higher Cantor space on $2^\kappa$, based on arbitrary ideals rather than the bounded ideal on $\kappa$. Our main focus is on the topology induced by the nonstationary ideal, and we call…

Why does the mammalian vascular tree maintain a conserved branching exponent $\alpha^* \approx 2.72$ across a $10^7$-fold range in body mass, despite a fundamental shift from viscous to wave-dominated transport? We prove this universality…

生物物理 · 物理学 2026-05-29 Riccardo Marchesi

This paper focuses on investigating an inexact stochastic model-based optimization algorithm that integrates preconditioning techniques for solving stochastic composite optimization problems. The proposed framework unifies and extends the…

最优化与控制 · 数学 2025-12-12 Chenglong Bao , Yancheng Yuan , Shulan Zhu

We prove under $V=L$ that the inclusion modulo the non-stationary ideal is a $\Sigma_1^1$-complete quasi-order in the generalized Borel-reducibility hierarchy ($\kappa>\omega$). This improvement to known results in $L$ has many new…

逻辑 · 数学 2019-12-10 Tapani Hyttinen , Vadim Kulikov , Miguel Moreno

Given a pair of real functions $(k,f)$, we study the conditions they must satisfy for $k+\lambda f$ to be the curvature in the arc-length of a closed planar curve for all real $\lambda$. Several equivalent conditions are pointed out,…

微分几何 · 数学 2020-06-18 Leonardo Alese

We give a simple sufficient condition for a spun-normal surface in an ideal triangulation to be incompressible, namely that it is a vertex surface with non-empty boundary which has a quadrilateral in each tetrahedron. While this condition…

几何拓扑 · 数学 2014-07-31 Nathan M. Dunfield , Stavros Garoufalidis
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