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Title:Grupa kot direktni produkt svojih nerazcepnih podgrup
Authors:ID Štulac, Barbara (Author)
ID Grašič, Mateja (Mentor) More about this mentor... New window
Files:.pdf MAG_Stulac_Barbara_2016.pdf (628,10 KB)
MD5: C2F68A2094F9C4687218DFBCC9F37A0B
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:Cilj magistrskega dela je spoznati, pod katerimi pogoji lahko grupe razcepimo na direktni produkt nerazcepnih podgrup. Spoznamo nove pojme kot so notranji direktni produkt grup, razcepna grupa, padajoči in naraščujoči verižni pogoj. Ugotovimo, da če grupa G zadošča vsaj enemu izmed verižnih pogojev na svojih podgrupah edinkah, potem je grupa G enaka direktnemu produktu končnega števila nerazcepnih podgrup. Definiramo normalni endomorfizem in novo operacijo seštevanja preslikav. Ugotovimo, da je kompozitum naravnih vložitev in projekcij direktnega produkta grupe G, normalni endomorfizem grupe. S pomočjo lastnosti in povezav med vsemi novimi pojmi na koncu formuliramo in dokažemo Krull-Schmidtov izrek, ki pravi, da lahko vsako grupo G, ki zadošča pogojema naraščujočih in padajočih verig svojih podgrup edink, na enoličen način zapišemo v obliki direktnega produkta nerazcepnih podgrup grupe G.
Keywords:grupa, podgrupa, notranji in zunanji direktni produkt grup, nerazcepna grupa, naraščujoči in padajoči verižni pogoj, normalni nilpotentni endomorfizem, Krull-Schmidtov izrek.
Place of publishing:Maribor
Publisher:[B. Štulac]
Year of publishing:2016
PID:20.500.12556/DKUM-64705 New window
UDC:512.54(043.2)
COBISS.SI-ID:22866440 New window
NUK URN:URN:SI:UM:DK:NPWUCD25
Publication date in DKUM:19.01.2017
Views:2179
Downloads:149
Metadata:XML DC-XML DC-RDF
Categories:FNM
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Secondary language

Language:English
Title:Group as a direct product of its subgroups
Abstract:The aim of this dissertation is to present the conditions under which can groups be decomposed into direct product of its indecomposable subgroups. We meet with new terms, such as internal direct product of groups, indecomposable group, descending and ascending chain condition. We also find out that, if group G satisfies at least one of the chain conditions, then G is a direct product of a finite number of indecomposable subgroups. We define what a normal endomorphism and a new operation of adding mappings are. We also find out, that the compositum of canonical injections and projections of direct product of the group G is a normal endomorphism of the group G. With the help of properties and different connections between new terms we formulate and prove the Krull-Schmidt theorem, which says, that every group G, which has both chain conditions, can be uniquely written as a direct product of its indecomposable subgroups.
Keywords:Group, Subgroup, Internal and External Direct Product, Indecomposable Group, Ascending and Descending Chain Condition, Normal Nilpotent Endomorphism, Krull-Schmidt Theorem.


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