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Teorija dimenzije in inverzni spektri : delo diplomskega seminarja
ID Žunter, Iris Ema (Author), ID Strle, Sašo (Mentor) More about this mentor... This link opens in a new window

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Abstract
V diplomskem delu obravnavamo koncept inverznih spektrov, njihovih limit in morfizmov med njimi ter si ogledamo obnašanje določenih topoloških lastnosti pod operacijo limite inverznega spektra. Vpeljemo najpogosteje uporabljene definicije dimenzije topoloških prostorov: malo in veliko induktivno ter krovno dimenzijo. Obravnavamo njihove lastnosti. Dokažemo izrek o sovpadanju dimenzij na razredu separabilnih metričnih prostorov. Dokažemo še izreka, ki teoriji povezujeta;eden od njiju pove, da je topološki prostor Hausdorffov in kompakten z dimenzijo manjšo ali enako n natanko tedaj, ko je sam limita inverznega spektra metrizabilnih kompaktov dimenzije manjše ali enake n, drugi pa predstavi podoben rezultat za metrizabilne kompakte in limite inverznih zaporedij poliedrov.

Language:Slovenian
Keywords:teorija dimenzije, inverzni spekter, inverzni sistem
Work type:Final seminar paper
Typology:2.11 - Undergraduate Thesis
Organization:FMF - Faculty of Mathematics and Physics
Year:2026
PID:20.500.12556/RUL-187971 This link opens in a new window
UDC:515.1
COBISS.SI-ID:292337411 This link opens in a new window
Publication date in RUL:17.09.2026
Views:59
Downloads:14
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Secondary language

Language:English
Title:Dimension theory and inverse spectra
Abstract:
In this thesis we discuss the concepts of inverse spectra, their limits and morphisms, and inspect the behavior of certain topological properties under the operation of the limit of an inverse spectrum. We introduce the most used notions of dimension of topological spaces: the small and large inductive dimension, and the covering dimension. We discuss the properties of said dimensions. We prove the coincidence theorem for dimensions on the class of separable metric spaces. We then prove two theorems that connect these two theories; one of them states that a topological space is compact and Hausdorff with dimension less than or equal to n if and only if it is a limit of an inverse spectrum of metrisable compacta of dimension less than or equal to n; the other theorem states an analogous equivalence for metrisable compacta and limits of inverse sequences of polyhedra.

Keywords:dimension theory, inverse spectrum, inverse system

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