Results 31 to 40 of about 797,150 (338)

Quantum graphs whose spectra mimic the zeros of the Riemann zeta function [PDF]

open access: yes, 2014
One of the most famous problems in mathematics is the Riemann hypothesis: that the non-trivial zeros of the Riemann zeta function lie on a line in the complex plane.
Hummel, Quirin   +2 more
core   +2 more sources

Factorization theorems for classical group characters, with applications to alternating sign matrices and plane partitions [PDF]

open access: yes, 2019
We show that, for a certain class of partitions and an even number of variables of which half are reciprocals of the other half, Schur polynomials can be factorized into products of odd and even orthogonal characters.
Ayyer, Arvind, Behrend, Roger E.
core   +3 more sources

Breakthrough Solution for Antimicrobial Resistance Detection: Surface‐Enhanced Raman Spectroscopy‐based on Artificial Intelligence

open access: yesAdvanced Materials Interfaces, EarlyView., 2023
This review discusses the use of Surface‐Enhanced Raman Spectroscopy (SERS) combined with Artificial Intelligence (AI) for detecting antimicrobial resistance (AMR). Various SERS studies used with AI techniques, including machine learning and deep learning, are analyzed for their advantages and limitations.
Zakarya Al‐Shaebi   +4 more
wiley   +1 more source

Digitalization of motivational features as a way to organize independent work of bachelors

open access: yesRUDN Journal of Informatization in Education, 2023
Problem statement . Effective organization of extracurricular work for future bachelors involves the construction of individual learning trajectories, based, among other things, on the level of motivation to study specialized disciplines.
Natalia Yu. Dobrovolskaia
doaj   +1 more source

The RRSI (Right Region for Shading Inequalities)

open access: yesMalaysia Journal of Invention and Innovation, 2023
Mathematics is often perceived as a difficult subject, which may discourage some people from learning it. Calculus is a branch of Mathematics that requires prior knowledge of pre-calculus. One topic in pre-calculus is solving a system of inequalities by
Noriham Bujang   +2 more
doaj  

Young students’ understanding of mathematical equivalence across different schools in South Africa

open access: yesSouth African Journal of Childhood Education, 2020
Background: Mathematical equivalence is a critical element of arithmetic understanding and a key component of algebraic thinking which is necessary for success in all levels of mathematics. Research studies continue to highlight misconceptions related to
Sharon McAuliffe   +2 more
doaj   +1 more source

Alternating Sign Pentagons and Magog Pentagons [PDF]

open access: yesarXiv, 2023
Alternating sign triangles have been introduced by Ayyer, Behrend and Fischer in 2016 and it was proven that there is the same number of alternating sign triangles with $n$ rows as there is of $n\times n$ alternating sign matrices. Later on Fischer gave a refined enumeration of alternating sign triangles with respect to a statistic $\rho$, having the ...
arxiv  

List homomorphisms to separable signed graphs [PDF]

open access: yes, 2023
The complexity of the list homomorphism problem for signed graphs appears difficult to classify. Existing results focus on special classes of signed graphs, such as trees and reflexive signed graphs. Irreflexive signed graphs are in a certain sense the heart of the problem, as noted by a recent paper of Kim and Siggers.
arxiv   +1 more source

On arithmetic and asymptotic properties of up-down numbers [PDF]

open access: yes, 2006
Let $\sigma=(\sigma_1,..., \sigma_N)$, where $\sigma_i =\pm 1$, and let $C(\sigma)$ denote the number of permutations $\pi$ of $1,2,..., N+1,$ whose up-down signature $\mathrm{sign}(\pi(i+1)-\pi(i))=\sigma_i$, for $i=1,...,N$.
Brown, F. C. S.   +2 more
core   +4 more sources

Knowledge mobilized by a Mathematics teacher of deaf students

open access: yesEducação Matemática Debate, 2019
In this article the mobilized knowledge of a Mathematics teacher is discussed from a Hypothetical Trajectory of Learning (HTL) to a group of deaf students.
Flavia Roberta Porto Teófilo   +1 more
doaj   +1 more source

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