Results 181 to 190 of about 582,984 (315)

Simple 3‐Designs of PSL ( 2 , 2 n ) With Block Size 13

open access: yesJournal of Combinatorial Designs, Volume 34, Issue 3, Page 119-138, March 2026.
ABSTRACT This paper focuses on the investigation of simple 3‐( 2 n + 1 , 13 , λ ) designs admitting PSL ( 2 , 2 n ) as an automorphism group. Such designs arise from the orbits of 13‐element subsets under the action of PSL ( 2 , 2 n ) on the projective line X = GF ( 2 n ) ∪ { ∞ }, and any union of these orbits also forms a 3‐design.
Takara Kondo, Yuto Nogata
wiley   +1 more source

Solving a Random Asymmetric TSP Exactly in Quasi‐Polynomial Time W.H.P.

open access: yesRandom Structures &Algorithms, Volume 68, Issue 2, March 2026.
ABSTRACT Let the costs C(i,j)$$ C\left(i,j\right) $$ for an instance of the Asymmetric Traveling Salesperson Problem (ATSP) be independent copies of a nonnegative random variable C$$ C $$ from a class of distributions that include the uniform [0,1]$$ \left[0,1\right] $$ distribution and the exponential mean 1 distribution with mean 1.
Tolson Bell, Alan M. Frieze
wiley   +1 more source

Supercongruences involving binomial coefficients and Euler polynomials

open access: yes
Let $p$ be an odd prime and let $x$ be a $p$-adic integer. In this paper, we establish supercongruences for $$ \sum_{k=0}^{p-1}\frac{\binom{x}{k}\binom{x+k}{k}(-4)^k}{(dk+1)\binom{2k}{k}}\pmod{p^2} $$ and $$ \sum_{k=0}^{p-1}\frac{\binom{x}{k}\binom{x+k}{k}(-2)^k}{(dk+1)\binom{2k}{k}}\pmod{p^2}, $$ where $d\in\{0,1,2\}$.
Wang, Chen, Han, Hui-Li
openaire   +2 more sources

A cybersecurity risk analysis framework for systems with artificial intelligence components

open access: yesInternational Transactions in Operational Research, Volume 33, Issue 2, Page 798-825, March 2026.
Abstract The introduction of the European Union Artificial Intelligence (AI) Act, the NIST AI Risk Management Framework, and related international norms and policy documents demand a better understanding and implementation of novel risk analysis issues when facing systems with AI components: dealing with new AI‐related impacts; incorporating AI‐based ...
J.M. Camacho   +3 more
wiley   +1 more source

Generalizability Theory for Randomly Parallel Testing

open access: yesJournal of Educational Measurement, Volume 63, Issue 1, Spring 2026.
Abstract Advancements in artificial intelligence (AI) have brought significant changes to testing practices, including the emergence of randomly parallel testing (RPT), in which examinees receive different but psychometrically similar sets of items generated from templates or AI‐based systems.
Won‐Chan Lee   +2 more
wiley   +1 more source

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