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Mappings preserving the idempotency of products of operatorsPetek, TatjanaDobimo splošno obliko surjektivne (brez predpostavke aditivnosti) preslikave ▫$\phi$▫, ki ohranja neničelno idempotentnost nekaterih produktov, definirane na (a) algebri vseh omejenih linearnih ... operatorjev ▫$B(X)$▫, kjer je ▫$X$▫ vsaj trirazsežen realen ali kompleksen vektorski prostor, (b) na množici vseh idempotentnih operatorjev ranga 1 v ▫$B(X)$▫ in (c) na množici vseh idempotentnih operatorjev v ▫$B(X)$▫. V vsakem od teh primerov se izkaže, da je ▫$\phi$▫ aditivna in bodisi multiplikativna bodisi antimultiplikativna.Source: Linear and Multilinear Algebra. - ISSN 0308-1087 (Vol. 58, no. 7, 2010, str. 903-925)Type of material - article, component part ; adult, seriousPublish date - 2010Language - englishCOBISS.SI-ID - 15741273
Author
Petek, Tatjana
Topics
matematika |
algebra |
idempotent |
ohranjanje idempotentnosti |
produkt operatorjev |
mathematics |
algebra |
idempotent |
idempotency preserving |
product of operators
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Petek, Tatjana | 07680 |
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