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This paper studies structural consequences of supercompactness of $\omega_1$ under $\sf{ZF}$. We show that the Axiom of Dependent Choice $(\sf{DC})$ follows from "$\omega_1$ is supercompact". "$\omega_1$ is supercompact" also implies that…

Logic · Mathematics 2019-04-04 Daisuke Ikegami , Nam Trang

We obtain a uniform ergodic theorem for the sequence $\frac1{s(n)} \sum_{k=0}^n(\varDelta s)(n-k)\,T^k$, where $\varDelta$ is the inverse of the endomorphism on the vector space of scalar sequences which maps each sequence into the sequence…

Spectral Theory · Mathematics 2021-03-22 Laura Burlando

A famous conjecture of Graham asserts that every set $A \subseteq \mathbb{Z}_p \setminus \{0\}$ can be ordered so that all partial sums are distinct. Although this conjecture was recently proved for sufficiently large primes by Pham and…

Combinatorics · Mathematics 2026-02-24 Simone Costa , Stefano Della Fiore

It is proved that every normalized weakly null \sq\ has a sub\sq\ which is convexly unconditional. Further, an Hierarchy of summability methods is introduced and with this we give a complete classification of the complexity of weakly null…

Functional Analysis · Mathematics 2016-09-06 Spiros A. Argyros , S. Merkourakis , A. Tsarpalias

We consider when the symmetric algebra of an infinite-dimensional Lie algebra, equipped with the natural Poisson bracket, satisfies the ascending chain condition (ACC) on Poisson ideals. We define a combinatorial condition on a graded Lie…

Rings and Algebras · Mathematics 2023-02-07 Omar Leon Sanchez , Susan J. Sierra

This study will explicitly demonstrate by example that an unrestricted infinite and forward recursive hierarchy of differential equations must be identified as an unclosed system of equations, despite the fact that to each unknown function…

Mathematical Physics · Physics 2015-11-03 Michael Frewer

We investigate the statement that the Lebesgue measure defined on all subsets of the Cantor space exists. As base system we take $\mathsf{ACA}_0^\omega + (\mu)$. The system $\mathsf{ACA}_0^\omega$ is the higher order extension of Friedman's…

Logic · Mathematics 2015-04-09 Alexander P. Kreuzer

Wu and Verd\'u developed a theory of almost lossless analog compression, where one imposes various regularity conditions on the compressor and the decompressor with the input signal being modelled by a (typically infinite-entropy)…

Dynamical Systems · Mathematics 2022-12-29 Yonatan Gutman , Adam Śpiewak

We present a multidimensional generalization of Zeckendorf's Theorem (any positive integer can be written uniquely as a sum of non-adjacent Fibonacci numbers) to a large family of linear recurrences. This extends work of Anderson and…

In this paper we provide a detailed convergence analysis for fully discrete second order (in both time and space) numerical schemes for nonlocal Allen-Cahn (nAC) and nonlocal Cahn-Hilliard (nCH) equations. The unconditional unique…

Numerical Analysis · Mathematics 2018-02-14 Zhen Guan , John Lowengrub , Cheng Wang

We define and study certain linear orders on chainable continua. Those orders depend on a sequence of chains obtained from definition of chainability and on a fixed non-principal ultrafilter on the set of natural numbers. An alternative…

General Topology · Mathematics 2026-02-10 Witold Marciszewski , Julia Ścisłowska , Benjamin Vejnar

We present a decomposition method for stochastic programs with 0-1 variables in the second-stage with absolute semi-deviation (ASD) risk measure. Traditional stochastic programming models are risk-neutral where expected costs are considered…

Optimization and Control · Mathematics 2016-05-27 Saravanan Venkatachalam , Lewis Ntaimo

The notion of a strongly summing sequence is introduced. Such a sequence is weak-Cauchy, a basis for its closed linear span, and has the crucial property that the dual of this span is not weakly sequentially complete. The main result is:…

Functional Analysis · Mathematics 2016-09-06 Haskell Rosenthal

Detecting the presence of anomalies in regression models is a crucial task in machine learning, as anomalies can significantly impact the accuracy and reliability of predictions. Random Sample Consensus (RANSAC) is one of the most popular…

Machine Learning · Statistics 2024-10-22 Le Hong Phong , Ho Ngoc Luat , Vo Nguyen Le Duy

The founding of the theory of cylindric algebras, by Alfred Tarski, was a conscious effort to create algebras out of first order predicate calculus. Let $n\in\omega$. The classes of non-commutative cylindric algebras ($NCA_n$) and weakened…

Logic · Mathematics 2018-07-02 Mohamed Khaled

We show that the theory $\mathsf{WKL}^*_0+\mathsf{CAC}$ is polynomially simulated by $\mathsf{RCA}_0^*$ with respect to $\forall\Pi^0_3$ formulas. For the proof, we use the method of forcing interpretations and syntactically simulate a…

Logic · Mathematics 2025-10-02 Katarzyna W. Kowalik

The minimization of convex objectives coming from linear supervised learning problems, such as penalized generalized linear models, can be formulated as finite sums of convex functions. For such problems, a large set of stochastic…

Machine Learning · Statistics 2018-12-18 Martin Bompaire , Emmanuel Bacry , Stéphane Gaïffas

The conditional gradient algorithm (also known as the Frank-Wolfe algorithm) has recently regained popularity in the machine learning community due to its projection-free property to solve constrained problems. Although many variants of the…

Machine Learning · Computer Science 2021-09-21 Xiyuan Wei , Bin Gu , Heng Huang

We develop a unified Lyapunov-integral quadratic constraint (IQC) framework for establishing uniform stability of first-order accelerated optimization algorithms in the $\beta$-smooth and $\gamma$-strongly convex regime. Classical analyses…

Optimization and Control · Mathematics 2026-05-12 Don Li , Dacian Daescu

AUC (area under ROC curve) is an important evaluation criterion, which has been popularly used in many learning tasks such as class-imbalance learning, cost-sensitive learning, learning to rank, etc. Many learning approaches try to optimize…

Machine Learning · Computer Science 2020-07-07 Wei Gao , Zhi-Hua Zhou