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Optimiziranje ETL v podjetju X : zaključna naloga
Ema Perković, 2023, undergraduate thesis

Keywords: podatki, obdelava, strežniki SQL, Power BI, integracija, poročilo, Excel, tabele
Published in RUP: 08.03.2023; Views: 832; Downloads: 6
URL Link to full text

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Divergence zero quaternionic vector fields and Hamming graphs
Jasna Prezelj, Fabio Vlacci, 2020, original scientific article

Abstract: We give a possible extension of the definition of quaternionic power series, partial derivatives and vector fields in the case of two (and then several) non commutative (quaternionic) variables. In this setting we also investigate the problem of describing zero functions which are not null functions in the formal sense. A connection between an analytic condition and a graph theoretic property of a subgraph of a Hamming graph is shown, namely the condition that polynomial vector field has formal divergence zero is equivalent to connectedness of subgraphs of Hamming graphs ▫$H(d, 2)$▫. We prove that monomials in variables ▫$z$▫ and ▫$w$▫ are always linearly independent as functions only in bidegrees ▫$(p, 0)$▫, ▫$(p, 1)$▫, ▫$(0, q)$▫, ▫$(1, q)$▫ and ▫$(2, 2)$▫.
Keywords: quaternionic power series, bidegree full functions, Hamming graph, linearly independent quaternionic monomials
Published in RUP: 03.01.2022; Views: 838; Downloads: 16
.pdf Full text (354,73 KB)

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