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1.
Qualitative research of expected competencies in logistics
Sonja Mlaker Kač, Maja Fošner, 2016, samostojni znanstveni sestavek ali poglavje v monografski publikaciji

Ključne besede: logistics, competencies, companies, qualitative research, quantitative research
Objavljeno: 09.05.2018; Ogledov: 627; Prenosov: 54
.pdf Celotno besedilo (218,38 KB)
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2.
Management and logistics
Borut Jereb, Mimo Drašković, Irena Gorenak, Sanja Bauk, Maja Fošner, Bojan Rosi, Drago Pupavac, Darja Topolšek, Oleksandr Dorokhov, Uroš Kramar, Željko Ivanović, Marjan Sternad, Matjaž Knez, Sonja Mlaker Kač, Ludmila Malyaretz, Matevž Obrecht, Tina Cvahte, 2016, znanstvena monografija

Opis: The scientific monograph titled Logistics and Management – selected topics is the result of a bilateral project, lasting from 2013 to 2015 and titled “Preparation of a joint scientific monograph in the field of logistics and management issued at the Faculty of Logistics in Celje and the Maritime Faculty of Kotor”. The project was managed by Professor Maja Fošner, PhD, from the Faculty of Logistics at the University of Maribor, and Professor Veselin Draskovic, PdD, from the Maritime Faculty of Kotor, Montenegro. The main goal of the monograph is to give a comprehensive account of selected areas from the field of logistics and challenges in the development of logistics, such as risk management and supply chains, transport cost, competences in logistics, urban logistics, green logistics, seaport cooperation, logistics network optimisation, logistics in tourism, logistics in performance management, systemic logistics providers and solutions to problems of transportation task. Wishing to offer a comprehensive presentation of various areas in the field of logistics, the authors of the monograph contributions, who participated on the project (Maja Fošner, Bojan Rosi, Borut Jereb, Marjan Sternad, Veselin Draskovic (ed.), Mimo Draskovic, Sanja Bauk, Senka Sekulac-Ivosevic), invited to cooperation also other researchers from the Faculty of Logistics and the Maritime Faculty of Kotor (Irena Gorenak, Matjaž Knez, Matevž Obrecht, Sonja Mlaker Kač, Tina Cvahte, Darja Topolsek, Drago Pupavac, Zeljko Ivanovic, Oleksandr Dorokhov, and Ludmila Malyaretz) who enriched the present monograph with their contributions. The monograph is aimed at professional public and anyone interested in the field of logistics. It should also serve as a useful aid in the study of logistics.
Ključne besede: logistics, management, risk management, supply chains, transport cost, urban logistics, green logistics, seaport cooperation, logistics network, optimisation, logistics in tourism, logistics in performance management, systemic logistics providers
Objavljeno: 08.05.2018; Ogledov: 808; Prenosov: 86
.pdf Celotno besedilo (21,21 MB)
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3.
An Engel condition with an additive mapping in semiprime rings
Maja Fošner, Nadeem Ur Rehman, Joso Vukman, 2014, izvirni znanstveni članek

Opis: The main purpose of this paper is to prove the following result: Let n > 1 be a fixed integer, let R be a n!-torsion free semiprime ring, and let f : R -> R be an additive mapping satisfying the relation [f (x), x]n = [[. . . [[f (x), x], x], . . .], x] = 0 for all x = R. In this case [f (x), x] = 0 is fulfilled for all x = R. Since any semisimple Banach algebra (for example, C algebra) is semiprime, this purely algebraic result might be of some interest from functional analysis point of view.
Ključne besede: mathematics, algebra, semiprime rings, derivation
Objavljeno: 27.06.2017; Ogledov: 720; Prenosov: 413
.pdf Celotno besedilo (104,05 KB)
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4.
Jordan superderivations. II
Maja Fošner, 2004, izvirni znanstveni članek

Opis: In a recent paper we have extended the classical Herstein's theorem on Jordan derivations on prime rings to Jordan superderivations on prime associative superalgebras. In the present paper we extend this result to semiprime associative superalgebras.
Ključne besede: associative superalgebra, superderivation, Jordan superderivation
Objavljeno: 14.06.2017; Ogledov: 597; Prenosov: 327
.pdf Celotno besedilo (1,87 MB)
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5.
Approximate cubic Lie derivations
Ajda Fošner, Maja Fošner, 2013, izvirni znanstveni članek

Opis: We study the stability and hyperstability of cubic Lie derivations on normed algebras. At the end, we write some additional observations about our results.
Ključne besede: Lie derivations, normed algebra
Objavljeno: 13.06.2017; Ogledov: 899; Prenosov: 298
.pdf Celotno besedilo (1,85 MB)
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6.
An identity with derivations on rings and Banach algebras
Ajda Fošner, Maja Fošner, Joso Vukman, 2008, izvirni znanstveni članek

Opis: The main purpose of this paper is to study the following: Let m, n, and $k_{i}, i = 1, 2, ..., n$ be positive integers and let $R$ be a $2m(m+ k_{1} + k_{2} + ... + k_{n} -1)!$-torsion free semiprime ring. Suppose that there exist derivations $D_{i} : R \to R, i = 1, 2, ..., n + 1$ , such that $D_{1}(x^{m})x^{k_{1}+...+k_{n}}+x^{k_{1}} D_{2}(x^{m})x^{k_{2}+...+k_{n}}+...+x^{k_{1}+...+k_{n}}D_{n+1}(x^{m})=0$ holds for all $x \in R$. Then we prove that $D_{1}+D_{2}+...+D_{n+1}=0$ and that the derivation $k_{1}D_{2}+(k_{1}+k_{2})D_{3}+...+(k_{1}+k_{2}+...+k{n})D_{n+1}$ maps $R$ into its center. We also obtain a range inclusion result of continuous derivations on Banach algebras.
Ključne besede: mathematics, algebra, associative rings and algebras, prime rings, Banach algebras, identities, derivations
Objavljeno: 31.03.2017; Ogledov: 509; Prenosov: 330
.pdf Celotno besedilo (102,89 KB)
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7.
Aditivne preslikave z dodatnimi lastnostmi na (pol)prakolobarjih in standardnih operatorskih algebrah
Benjamin Marcen, 2016, doktorska disertacija

Opis: V doktorski disertaciji si bomo v uvodu ogledali nekaj osnovnih pojmov, definicij ter pomembnejših rezultatov s področja algebre. Obravnavali bomo funkcionalne enačbe, ki so v zvezi z odvajanji, centralizatorji ter sorodnimi preslikavami na prakolobarjih, polprakolobarjih in standardnih operatorskih algebrah. Na tem področju že vrsto let delujejo tudi slovenski matematiki, ki so s svojimi rezultati pomembno vplivali na razvoj tega področja. Že v osemdesetih letih sta bila močno dejavna na tem področju J. Vukman, M. Brešar, sledili pa so B. Zalar, B. Hvala, v novejšem času pa M. Fošner, I. Kosi-Ulbl, D. Benkovič, D. Eremita, A. Fošner, N. Peršin ter N. Širovnik. Osnovno sredstvo pri reševanju funkcionalnih enačb, ki bodo predstavljene v disertaciji, je teorija funkcijskih identitet, ki jo je leta 2000 v cite{87} predstavil M. Brešar. Leta 2007 pa so jo M. Brešar, M. A. Chebotar in W. S. Martindale III tudi podrobneje predstavili v knjigi cite{MB4}. Teorija funkcijskih identitiet bo v disertaciji predstavljena skupaj s polinomskimi identitietami ter d-prostimi množicami.
Ključne besede: Aditivna preslikava, linearen operator, odvajanje, jordansko odvajanje, jordansko trojno odvajanje, centralizator, funkcionalna enačba, standardna operatorska algebra, prakolobar, polprakolobar, Banachov prostor, involucija.
Objavljeno: 21.10.2016; Ogledov: 1288; Prenosov: 93
.pdf Celotno besedilo (671,60 KB)

8.
Nekateri rezultati o odvajanjih na prakolobarjih
Ana Marija Varšnik, 2016, diplomsko delo

Opis: Diplomsko delo z naslovom Nekateri rezultati o odvajanjih na prakolobarjih je razdeljeno na dve poglavji. Prvo poglavje je namenjeno osnovnim pojmom, ki jih potrebujemo za razumevanje diplomskega dela. V podrazdelkih smo se osredotočili, med drugim, na pojme grupa, kolobar, ideal, algebra, prakolobar, polprakolobar, odvajanje in Jordansko odvajanje. V drugem poglavju, ki je cilj diplomskega dela, bodo predstavljeni izreki in dokazi, ki jih potrebujemo za dokaz klasičnega rezultata I.N.Hersteina, ki pravi, da je vsako Jordansko odvajanje na prakolobarju s karakteristiko različno od dva odvajanje. Prav tako bomo zapisali Posnerjev izrek, ki pravi, da produkt dveh neničelnih odvajanj na prakolobarju s karakteristiko različno od dva ni odvajanje.
Ključne besede: kolobar, grupa, prakolobar, polprakolobar, ideal, algebra, odvajanje, Jordansko odvajanje.
Objavljeno: 30.08.2016; Ogledov: 724; Prenosov: 38
.pdf Celotno besedilo (281,58 KB)

9.
On some functional equations arising from (m, n)-Jordan derivations and commutativity of prime rings
Maja Fošner, Joso Vukman, 2012, izvirni znanstveni članek

Opis: The purpose of this paper is to prove the following result. Let ▫$m, n ge 1$▫ be some fixed integers with ▫$m ne n$▫, and let ▫$R$▫ be a prime ring with ▫$(m+n)^2 < text{char} (R)$▫. Suppose a nonzero additive mapping ▫$D : R to R$▫ exists satisfying the relation ▫$(m+n)^2 D(x^3) = m(3m+n) D(x)x^2 + 4mnxD(x)x + n(3n+m)x^2 D(x)$▫ for all ▫$x in R$▫. In this case ▫$D$▫ is a derivation and ▫$R$▫ is commutative.
Ključne besede: matematika, prakolobar, polprakolobar, odvajanje, jordansko odvajanje, levo odvajanje, mathematics, prime ring, semiprime ring, derivation, Jordan derivation, left dderivation, left Jordan derivation, (m, n)-Jordan drivation
Objavljeno: 10.07.2015; Ogledov: 695; Prenosov: 73
URL Povezava na celotno besedilo

10.
Identities with generalized derivations in prime rings
Maja Fošner, Joso Vukman, 2012, izvirni znanstveni članek

Opis: In this paper we investigate identities with two generalized derivations in prime rings. We prove, for example, the following result. Let ▫$R$▫ be a prime ring of characteristic different from two and let ▫$F_1, F_2 colon R to R$▫ be generalized derivations satisfying the relation ▫$F_1(x)F_2(x) + F_2(x)F_1(x) = 0$▫ for all ▫$x in R$▫. In this case either ▫$F_1 = 0$▫ or ▫$F_2 = 0$▫.
Ključne besede: matematika, prakolobar, polprakolobar, odvajanje, posplošeno odvajanje, mathematics, prime ring, semiprime ring, derivation, generalized derivation
Objavljeno: 10.07.2015; Ogledov: 657; Prenosov: 78
URL Povezava na celotno besedilo

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