Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Sebastian Żurek"'
Publikováno v:
Entropy, Vol 26, Iss 4, p 296 (2024)
Background: Early detection of atrial fibrillation (AF) is essential to prevent stroke and other cardiac and embolic complications. We compared the diagnostic properties for AF detection of the percentage of successive RR interval differences greater
Externí odkaz:
https://doaj.org/article/2e0b18f4765145a09407289ed03d5c5c
Autor:
Sebastian Żurek, Waldemar Grabowski, Klaudia Wojtiuk, Dorota Szewczak, Przemysław Guzik, Jarosław Piskorski
Publikováno v:
Entropy, Vol 22, Iss 6, p 694 (2020)
Relative consistency is a notion related to entropic parameters, most notably to Approximate Entropy and Sample Entropy. It is a central characteristic assumed for e.g., biomedical and economic time series, since it allows the comparison between diff
Externí odkaz:
https://doaj.org/article/067ffe8a0d8844bc9de8ae842b8aa89d
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Let 𝒩(∞,R) be the Lie algebra of infinite strictly upper triangular matrices over a commutative ring R. We show that every derivation of 𝒩(∞,R) is a sum of diagonal and inner derivations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64534e95cf3f1dce84a478bb57e4213d
https://doi.org/10.1080/00927872.2016.1277388
https://doi.org/10.1080/00927872.2016.1277388
Publikováno v:
Communications in Algebra. 45:3274-3277
We solve an old Suskevic’s problem on right zero divisors in the ring T(∞,K) of infinite ℕ×ℕ upper triangular matrices over a field K. In the solution we use a notion of strong linear independence.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32812d422e3d327d3933b22fcd8836f7
https://doi.org/10.1080/00927872.2016.1236124
https://doi.org/10.1080/00927872.2016.1236124
Autor:
Waldemar Hołubowski, Sebastian Żurek
In this paper we shall consider the Lie algebra of column-finite infinite matrices indexed by positive integers $\mathbb{N}$, describe the lattice of its ideals for arbitrary field $K$ and study its derivations over any commutative, unital ring $R$.<
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4106849e241708c1eb847b60ce9fbf31
http://arxiv.org/abs/1806.01099
http://arxiv.org/abs/1806.01099
Autor:
Sebastian Zurek, Waldemar Grabowski, Marcin Kosmider, Szymon Jurga, Przemyslaw Guzik, Jaroslaw Piskorski
Publikováno v:
Journal of Applied Mathematics and Computational Mechanics, Vol 17, Iss 2, Pp 105-113 (2018)
Externí odkaz:
https://doaj.org/article/0482cb9de66944d7acb7da1937d82edf