Results 41 to 50 of about 11,941,652 (143)

Abelian number fields with frobenian conditions

open access: yesMathematika, Volume 72, Issue 4, October 2026.
Abstract We study the distribution of abelian number fields with frobenian conditions imposed on the conductor. In particular, we find an asymptotic for the number of abelian field extensions of a number field k$k$ whose conductor is the sum of two squares. We also discuss an application of the Brauer group of stacks to quadratic number fields.
Julie Tavernier
wiley   +1 more source

Density of zeros for systems of forms

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 4, October 2026.
Abstract Let K$K$ be a field of characteristic zero over which every diagonal form in sufficiently many variables admits a nontrivial zero. For example, K$K$ may be a totally imaginary number field or a finite extension of Qp$\mathbb {Q}_p$. Suppose f1,…,fs$f_1,\ldots,f_s$ are a collection of forms (i.e.
Amichai Lampert
wiley   +1 more source

Conditional Randomization Tests for the Specification of Interference Structure

open access: yesJournal of Applied Econometrics, Volume 41, Issue 6, Page 791-805, September/October 2026.
ABSTRACT This study proposes specification tests for interference structure in causal inference with spillovers. We focus on experimental settings in which the treatment assignment mechanism is known. To test whether a given exposure mapping adequately summarizes the true interference structure, we develop conditional randomization tests by utilizing ...
Tadao Hoshino, Takahide Yanagi
wiley   +1 more source

Surjectivity of isometries between weighted spaces of holomorphic functions

open access: yes, 2019
We examine the surjectivity of isometries between weighted spaces of holomorphic functions. We show that for certain classical weights on the open unit disc all isometries of the weighted space of holomorphic functions,Hvo(Δ), are surjective.
Rueda, Pilar, Boyd, Christopher
core   +1 more source

Reversibility and surjectivity problems of cellular automata [PDF]

open access: yes, 1994
The problem of deciding if a given cellular automaton (CA) is reversible (or, equivalently, if its global transition function is injective) is called the reversibility problem of CA.
Kari, Jarkko
core   +1 more source

Colourings of Uniform Group Divisible Designs and Maximum Packings

open access: yesJournal of Combinatorial Designs, Volume 34, Issue 9, Page 437-456, September 2026.
ABSTRACT A weak c‐colouring of a design is an assignment of colours to its points from a set of c available colours, such that there are no monochromatic blocks. A colouring of a design is block‐equitable, if for each block, the number of points coloured with any available pair of colours differ by at most one.
Andrea C. Burgess   +6 more
wiley   +1 more source

Proceedings of Formal Methods in Computer-Aided Design, FMCAD 2023

open access: yes, 2023
The Conference on Formal Methods in Computer-Aided Design (FMCAD) is an annual conference on the theory and applications of formal methods in hardware and system in academia and industry for presenting and discussing groundbreaking methods, technologies,
Formal Methods in Computer Aided Design
core   +1 more source

Equidistribution in 2‐nilpotent Polish groups and triple restricted sumsets

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 3, September 2026.
Abstract The aim of this paper is to establish a Ratner‐type equidistribution theorem for orbits on homogeneous spaces associated with 2$\hskip.001pt 2$‐nilpotent locally compact Polish groups under the action of a countable discrete abelian group.
Ethan Ackelsberg, Asgar Jamneshan
wiley   +1 more source

L∞$L^\infty$ compactness of solutions of quasilinear problems and applications

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 3, September 2026.
Abstract For a (not necessarily smooth) bounded domain Ω$\Omega$ of RN$\mathbb {R}^N$, N⩾2$N \geqslant 2$ and a Carathéodory vector‐valued function a:Ω×RN→RN$a:\Omega \times \mathbb {R}^N \rightarrow \mathbb {R}^N$, we study the compactness of the inverse of the Leray–Lions operator A(u)=−div(a(x,∇u))$A(u)=-\text{div}(a(x, \nabla u))$, u∈W01,p(Ω)$u\in ...
D. Arcoya   +2 more
wiley   +1 more source

Methods in Critical Care

open access: yes, 1980
vii.484 hal.; 27 ...
Methods
core  

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