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Dissertations / Theses on the topic 'Pi-closed and delta-closed sets'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Hummdi, Ali. "SETS CLOSED UNDER THE DIVISION ALGORITHM FINITE DA-SETS." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1478267679533519.

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2

Salas, Brown Margot, Ennis Rosas, and Carlos Carpintero. "Generalized closed sets via ideals and operator." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/95456.

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3

Caldas, Miguel, та Govindappa Navalagi. "On generalizing δ-open functions". Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/96271.

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In this paper we introduce two classes of functions called weakly δ -open and weakly δ -closed functions. We obtain their characterizations, their basic properties and their relationships with other types of functions between topological spaces.

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4

Bishop, Gregory J. "Ultrafilters generated by a closed set of functions and K- covering sets /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487779914823645.

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5

Bongiorno, E. G. "A Birth-and-Growth Process for Random Closed Sets Based on Minkowski Sum." Doctoral thesis, Università degli Studi di Milano, 2007. http://hdl.handle.net/2434/55276.

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In literature,birth-and-growth processes are the composition of a marked point process together with a real process that represents a local isotropic dilatation.They describe those evolution phenomena that are typically associated to crystals which border is supposed regular enough.The aim of thesis is to redefine the framework to avoid regularity hypothesis for the border.In order to do this,a geometrical point of view is used to present a particular family of set-valued continuous time stochastic processes:the growth process is described by a bounded closed set-valued process {G_t,t>0},at th

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6

Gersch, Oliver. "Convergence in distribution of random closed sets and applications in stability theory of stochastic optimisation." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=983617856.

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7

Monserrat, Antich Miquel. "Machines in closed categories in general and in categories of heyting Algebra valued sets in particular." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59807.

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A survey of the minimal realization theory of Arbib and Manes for "state-behavior" machines in a category is given, and how the closed category machines of Goguen are included in the above machines is discussed in detail. A survey of the non-deterministic treatment due to Arbib and Manes is given. A study of C-machines in a closed category for a monoid C is given in both the deterministic and the non-deterministic cases. A notion of u-machine in a topos for a morphism of monoids u is introduced and studied. A discussion of the category of H-valued sets as a topos is given and finally some of t

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8

Caldas, Miguel, Saeid Jafari та R. M. Latif. "Β - open sets and a new class of functions". Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/96443.

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The concept of (b, s)-continuous functions in topological spaces is introduced and studied. Some of their characteristic properties are considered. Also we investigate the relationships between these classes of functions and other classes of functions.

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9

Baldotto, Giorgia <1988&gt. "CLOSED LOOP SYSTEM E SIMBIOSI INDUSTRIALE: REALTÀ DINAMICHE ED INNOVATIVE DELLA GREEN ECONOMY." Master's Degree Thesis, Università Ca' Foscari Venezia, 2013. http://hdl.handle.net/10579/2897.

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La terra ci sta inviando segnali di indebolimento, e per evitare l’esaurimento delle risorse naturali l’uomo dovrebbe cercare di creare un rapporto mutualistico con essa. È necessario, quindi, che l’uomo riconsideri il proprio consumo ed impari a riciclare il più possibile, solo così si potranno preservare le risorse naturali e si ridurrà la quantità di rifiuti. Un’impresa che intraprende il proprio viaggio verso la sostenibilità dovrebbe, pertanto, attivarsi nell'ecologia industriale. L’economia, per essere sostenibile, dovrebbe imitare la natura; gli ecosistemi, funzionando come un ciclo chi

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10

Caldas, Miguel, Erdal Ekici та Saeid Jafari. "On λ-closure spaces". Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/95936.

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In this paper, we show that a pointwise λ -symmetric λ -isotonic λ -closure function is uniquely determined by the pairs of sets it separates. We then show that when the λ -closure function of the domain is λ -isotonic and the λ -closure function of the codomain is λ -isotonic and pointwise- λ -symmetric, functions which separate only those pairs of sets which are already separated are λ -continuous.

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11

Mumu, Ayesha Sugandhi <1988&gt. "Large countries are better off in a closed economy and small countries are better off in an open economy - with empirical evidence." Master's Degree Thesis, Università Ca' Foscari Venezia, 2013. http://hdl.handle.net/10579/3937.

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Abstract The fundamental political and economic phenomena of the last century have been more decentralized countries (the break up of nations into smaller states) and the increased economic integration of international markets. Taking into consideration these facts this dissertation tends to empirically prove that, large countries are better off in a closed economy and small countries are better off in an open economy, by investigating the relationship of size with trade openness and its impact on government consumption. Basically economic integration and political secessions are positively c

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12

Díaz, Fernández Ester. "Modelling estimation and analysis of dynamic processes from image sequences using temporal random closed sets and point processes with application to the cell exocytosis and endocytosis." Doctoral thesis, Universitat de València, 2010. http://hdl.handle.net/10803/62137.

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In this thesis, new models and methodologies are introduced for the analysis of dynamic processes characterized by image sequences with spatial temporal overlapping. The spatial temporal overlapping exists in many natural phenomena and should be addressed properly in several Science disciplines such as Microscopy, Material Sciences, Biology, Geostatistics or Communication Networks. This work is related to the Point Process and Random Closed Set theories, within Stochastic Geometry. The proposed models are an extension of Boolean Models in R2 by adding a temporal dimension. The study has been m

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13

Al, Abdulaali Ahmad Khalid. "On the Extension and Wedge Product of Positive Currents." Doctoral thesis, Stockholms universitet, Matematiska institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-71035.

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This dissertation is concerned with extensions and wedge products of positive currents. Our study can be considered as a generalization for classical works done earlier in this field. Paper I deals with the extension of positive currents across different types of sets. For closed complete pluripolar obstacles, we show the existence of such extensions. To do so, further Hausdorff dimension conditions are required. Moreover, we study the case when these obstacles are zero sets of strictly k-convex functions. In Paper II, we discuss the wedge product of positive pluriharmonic (resp. plurisubhar

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14

Carmona, Juan Felipe. "Expansions géométriques et ampleur." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10067/document.

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Le résultat principal de cette thèse est l'étude de l'ampleur dans des expansions des structures géométriques et de SU-rang oméga par un prédicat dense/codense indépendant. De plus, nous étudions le rapport entre l'ampleur et l'équationalite, donnant une preuve directe de l'équationalite de certaines théories CM-triviales. Enfin, nous considérons la topologie indiscernable et son lien avec l'équationalite et calculons la complexité indiscernable du pseudoplan libre<br>The main result of this thesis is the study of how ampleness grows in geometric and SU-rank omega structures when adding a new

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15

Tonial, Liliane Sibila Schmaedecke. "Estrutura populacional do camarão sete-barbas Xiphopenaeus kroyerl (Heller, 1862) na foz do rio São Francisco, nordeste do Brasil." Universidade Federal de Alagoas, 2011. http://repositorio.ufal.br/handle/riufal/964.

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Xiphopenaeus kroyeri (Heller, 1862) has a wide marine distribution, occurring from North Carolina (EUA) to Rio Grande do Sul (Brazil), being the only Penaeidae found in the Western Atlantic. The species inhabits sandy or muddy ground in shallow waters. It s an important fishery resource to communities that live on the coast. The population structure analysis of sea-bob shrimp from São Francisco River mouth, Alagoas-Brazil, was the main objective of this study, and specifically the growth rate of the species. Along the research 4267 specimens of Xiphopenaeus kroyeri were collected, from which 4

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16

Hu, Yining. "Quelques Résultats Arithmétiques Impliquant des Suites Engendrées par Automates." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066333.

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Cette thèse est composée d'une partie sur la conjecture des familles stables par unions et de quatre autres chapitres consacrés aux sujets liés aux suites automatiques. Dans la première partie, on donne une condition suffisante pour qu'une version affaiblie de la conjecture soit vraie. On donne aussi un majorant de la fréquence maximale minimale dans une famille de taille $n$. Dans Chapitre 3 on démontre que la formule d'extraction des coefficients des séries algébriques connue pour les corps à caractéristique $0$ est une conséquence d'un théorème de Furstenberg qui permet d'écrire certaines s

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17

Alessandrini, Daniele. "A tropical compactification for character spaces of convex projective structures." Doctoral thesis, Scuola Normale Superiore, 2007. http://hdl.handle.net/11384/85709.

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18

Daugherty, Sean Michael. "Independent sets and closed-shell independent sets of fullerenes." Thesis, 2009. http://hdl.handle.net/1828/1783.

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Fullerenes are all-carbon molecules with polyhedral structures where each atom is bonded with three other atoms and the faces of the polyhedron are pentagons and hexagons. Fullerene graphs model the fullerene structures and are cubic planar graphs having twelve pentagonal faces and the remaining faces are hexagonal. This work explores two models that seek to determine the maximum number of bulky addends that may bond to the surface of a fullerene. The first model assumes that any two bulky addends are too large to bond to adjacent carbon atoms. This is equivalent to finding a graph-theoreti

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19

"Linear regularity of closed sets in Banach spaces." 2004. http://library.cuhk.edu.hk/record=b6073746.

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by Zang Rui.<br>"Nov 2004."<br>Thesis (Ph.D.)--Chinese University of Hong Kong, 2004.<br>Includes bibliographical references (p. 78-82)<br>Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Mode of access: World Wide Web.<br>Abstracts in English and Chinese.

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20

El-Hawwary, Mohamed. "Passivity Methods for the Stabilization of Closed Sets in Nonlinear Control Systems." Thesis, 2011. http://hdl.handle.net/1807/29714.

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In this thesis we study the stabilization of closed sets for passive nonlinear control systems, developing necessary and sufficient conditions under which a passivity-based feedback stabilizes a given goal set. The development of this result takes us to a journey through the so-called reduction problem: given two nested invariant sets G1 subset of G2, and assuming that G1 enjoys certain stability properties relative to G2, under what conditions does G1 enjoy the same stability properties with respect to the whole state space? We develop reduction principles for stability, asymptotic stability,

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21

"The strong conical hull intersection property for systems of closed convex sets." 2006. http://library.cuhk.edu.hk/record=b5896472.

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Pong Ting Kei.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2006.<br>Includes bibliographical references (leaves 79-82).<br>Abstracts in English and Chinese.<br>Chapter 1 --- Introduction --- p.5<br>Chapter 2 --- Preliminary --- p.7<br>Chapter 2.1 --- Introduction --- p.7<br>Chapter 2.2 --- Notations --- p.7<br>Chapter 2.3 --- On properties of Normal Cones --- p.9<br>Chapter 2.4 --- Polar Calculus --- p.13<br>Chapter 2.5 --- Notions of Relative Interior --- p.17<br>Chapter 2.6 --- Properties of Minkowski functional --- p.18<br>Chapter 2.7 --- Properties of Epigraphs --- p.19<

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22

Seaton, Gerald Arthur. "The lattice of equivalence classes of closed sets and the Stone-C̆ech compactification." 2003. http://www.lib.ncsu.edu/theses/available/etd-03022004-144221/unrestricted/etd.pdf.

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23

Vimieiro, Renato. "Mining disjunctive patterns in biomedical data sets." Thesis, 2012. http://hdl.handle.net/1959.13/936341.

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Research Doctorate - Doctor of Philosophy (PhD)<br>Frequent itemset mining is one of the most studied problems in data mining. Since Agrawal et al. (1993) introduced the problem, several advances both theoretical and practical have been achieved. In spite of that, there are still many unresolved issues to be tackled before frequent pattern mining can be claimed a cornerstone approach in data mining (Han et al., 2007). Here, we investigate issues related to: (1) the (un)suitability of frequent itemset mining algorithms to identify patterns in biomedical data sets; and (2) the limited expressive

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24

Li, Nana, and Guantao Chen. "Union Closed Set Conjecture and Maximum Dicut in Connected Digraph." 2014. http://scholarworks.gsu.edu/math_diss/19.

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In this dissertation, we study the following two topics, i.e., the union closed set conjecture and the maximum edges cut in connected digraphs. The union-closed-set-conjecture-topic goes as follows. A finite family of finite sets is {\it union closed} if it contains the union of any two sets in it. Let $X_{\mathcal{F}}=\cup_{F\in\mathcal{F}}F$. A union closed family of sets is {\it separating} if for any two distinct elements in $\mathcal{F}$, there is a set in $\mathcal{F}$ containing one of them, but not the other and there does not exist an element which is contained in every set of it. Not

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25

Gersch, Oliver Vogel Silvia. "Convergence in distribution of random closed sets and applications in stability theory of stochastic optimisation /." 2007. http://www.gbv.de/dms/ilmenau/toc/523804660.PDF.

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26

Gersch, Oliver [Verfasser]. "Convergence in distribution of random closed sets and applications in stability theory of stochastic optimisation / vorgelegt von Oliver Gersch." 2007. http://d-nb.info/983617856/34.

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27

GENTILI, Luca. "A New Mathematical Framework for the Balance Sheet Dynamic Modeling applied to CFaR and LaR." Doctoral thesis, 2017. http://hdl.handle.net/11562/959681.

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In this thesis we intend to introduce a new theoretical framework that will allow us to define a new set of balance sheet mathematical models. In the first chapter after a historical introduction about the long and close relationship between mathematics and accounting we will focus on the in depth mathematical analysis, present in literature, of the double-entry book-keeping tool. To this day the double entry bookkeeping system can be considered as the reference mathematical theoretical framework of the accounting practice and thinking. The result of this analysis, combined with the results al

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28

Mbebi, Alain Julio. "A Journey Into State-Space Models." Doctoral thesis, 2017. http://hdl.handle.net/11562/959712.

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Questa tesi riguarda la modellizzazione di serie storiche generate da processi latenti, utilizzando modelli "state-space". Vengono proposti nuovi modelli e metodologie per poi applicarli ad una varietà di casi tipici presenti in finanza ed economia. La tesi è suddivisa in sei capitoli. Il primo capitolo presenta le motivazioni della ricerca, i suoi obiettivi e la presentazione dei contenuti. Il secondo capitolo approfondisce il concetto di modelli "state-space", riporta e discute le procedure di filtraggio più comuni, e chiarisce alcune definizioni, proprietà e concetti matematici che verranno

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29

Adeyefa, Segun Adeyemi. "Satisticing solutions for multiobjective stochastic linear programming problems." Thesis, 2011. http://hdl.handle.net/10500/5703.

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Multiobjective Stochastic Linear Programming is a relevant topic. As a matter of fact, many real life problems ranging from portfolio selection to water resource management may be cast into this framework. There are severe limitations in objectivity in this field due to the simultaneous presence of randomness and conflicting goals. In such a turbulent environment, the mainstay of rational choice does not hold and it is virtually impossible to provide a truly scientific foundation for an optimal decision. In this thesis, we resort to the bounded rationality and chance-constrained princip

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30

Adeyefa, Segun Adeyemi. "Satisficing solutions for multiobjective stochastic linear programming problems." Thesis, 2011. http://hdl.handle.net/10500/5703.

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Multiobjective Stochastic Linear Programming is a relevant topic. As a matter of fact, many real life problems ranging from portfolio selection to water resource management may be cast into this framework. There are severe limitations in objectivity in this field due to the simultaneous presence of randomness and conflicting goals. In such a turbulent environment, the mainstay of rational choice does not hold and it is virtually impossible to provide a truly scientific foundation for an optimal decision. In this thesis, we resort to the bounded rationality and chance-constrained princip

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31

Aphane, Maggie. "On some results of analysis in metric spaces and fuzzy metric spaces." Diss., 2009. http://hdl.handle.net/10500/3224.

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The notion of a fuzzy metric space due to George and Veeramani has many advantages in analysis since many notions and results from classical metric space theory can be extended and generalized to the setting of fuzzy metric spaces, for instance: the notion of completeness, completion of spaces as well as extension of maps. The layout of the dissertation is as follows: Chapter 1 provide the necessary background in the context of metric spaces, while chapter 2 presents some concepts and results from classical metric spaces in the setting of fuzzy metric spaces. In chapter 3 we continue wi

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