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Mappings that preserve pairs of operators with zero triple Jordan product
Mirko Dobovišek, Bojan Kuzma, Gorazd Lešnjak, Chi-Kwong Li, Tatjana Petek, 2007, original scientific article

Abstract: Let ▫$\mathbb{F}$▫ be a field and ▫$n \ge 3$▫. Suppose ▫${\mathfrak{G_1,G_2}} \subseteq M_n(\mathbb{F})▫$ contain all rank-one idempotents. The structure of surjections ▫$\phi : \mathfrak{G_1} \to \mathfrak{G_2}$▫ satisfying ▫$ABA = 0 \iff \phi(A)\phi(B)\phi(A) = 0$▫ is determined. Similar results are also obtained for (a) subsets of bounded operators acting on a complex or real Banach space, (b) the space of Hermitian matrices acting on ▫$n$▫-dimensional vectors over a skew-field, (c) subsets of self-adjoint bounded linear operators acting on an infinite dimensional complex Hilbert space. It is then illustrated that the results can be applied to characterize mappings ▫$\phi$▫ on matrices or operators such that ▫$F(ABA) = F(\phi(A)\phi(B)\phi(A))▫$ for all ▫$A,B$▫ for functions ▫$F$▫ such as the spectral norm, Schatten ▫$p$▫-norm, numerical radius and numerical range, etc.
Keywords: matrix algebra, Jordan triple product, nonlinear preservers
Published in RUP: 03.04.2017; Views: 2468; Downloads: 97
URL Link to full text

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The influence of management on quality of the annual report of public institution
Tatjana Horvat, Sonja Martinčič, 2016, published scientific conference contribution abstract

Keywords: annual report, public libraries, management, accounting, auditing
Published in RUP: 08.08.2016; Views: 2728; Downloads: 75
URL Link to full text

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Improvement of business competitiveness through developing G2B e-services in Slovenia and Macedonia
Zoran Janevski, Štefan Bojnec, Uroš Godnov, Tatjana Petkovska Mirčevska, Biljana Angelova, Monika Angeloska Dichovska, 2015, original scientific article

Abstract: Governments around the world use modern information and communication technologies increasingly in their activities trying to make their services better and more easily accessible to their citizens and businesses.The aim of this paper is to analyze some e-Government services in Slovenia and Macedonia by focusing on government-to-business applications (G2B) with special emphasis on their contribution to creating better business environement in these two countries respectively. The data presented in this analysis come from both desk and field research made in Slovenia and Macedonia.The development of government-to-business services facilitates the interaction between governments and businesses via web-based applications; improves e-business environment and increases business benefits for the companies. By using government-to-business applications companies save time and money; have more efficient communication with government entities and contribute to achieving a higher level of transparency of government activities.
Keywords: G2B application, e-Government, business climate, business benefits, e-services
Published in RUP: 08.08.2016; Views: 4194; Downloads: 170
URL Link to full text

69.
Brezje pri Turnišču
Matjaž Novšak, Alenka Tomaž, Ana Plestenjak, 2013, professional monograph

Keywords: CD-ROM
Published in RUP: 21.12.2015; Views: 3593; Downloads: 38
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