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Aspects of micro black hole evaporation
Saeede Nafooshe, 2015, doctoral dissertation

Found in: ključnih besedah
Keywords: micro black holes, evaporation, gravitons, grey-body factors, large dimensions, quasi-normal modes, Vaidya metric
Published: 17.11.2015; Views: 5328; Downloads: 305
.pdf Fulltext (3,14 MB)

A class of hyperlattices induced by quasi-ordered semigroups
Irina Cristea, Michal Novak, Stepan Krehlik, 2017, published scientific conference contribution

Abstract: In this paper we study hyperstructure generalizations of lattices. We give conditions for EL-semihypergroups to be H_v-semilattices, hypersemilattices or hyperlattices. We also study some of their special elements.
Found in: ključnih besedah
Keywords: join hyperlattice, hyperlattice, hypersemilattice, quasi-ordered semigroup
Published: 06.02.2017; Views: 3198; Downloads: 1
.pdf Fulltext (337,41 KB)

Weak closure operations on ideals of BCK-algebras
Hashem Bordbar, 2017, original scientific article

Abstract: Weak closure operation, which is more general form than closure operation, on ideals of BCK- algebras is introduced, and related properties are investigated. Regarding weak closure operation, finite type and (strong) quasi-primeness are considered. Also positive implicative (resp., commutative and implicative) weak closure operations are discussed.
Found in: ključnih besedah
Keywords: weak closure operation of finite type, (quasi-prime, positive implicative, commutative, implica- tive) weak closure operation.
Published: 01.12.2019; Views: 2212; Downloads: 0
.pdf Fulltext (629,86 KB)

Quotient Structures of BCK/BCI-Algebras Induced by Quasi-Valuation Maps
Hashem Bordbar, Young Bae Jun, Seok Zun Song, 2018, original scientific article

Abstract: Relations between I-quasi-valuation maps and ideals in BCK/BCI -algebras are investigated. Using the notion of an I-quasi-valuation map of a BCK/BCI-algebra, the quasi-metric space is induced, and several properties are investigated. Relations between the I-quasi-valuation map and the I-valuation map are considered, and conditions for an I-quasi-valuation map to be an I-valuation map are provided. A congruence relation is introduced by using the I-valuation map, and then the quotient structures are established and related properties are investigated. Isomorphic quotient BCK/BCI-algebras are discussed.
Found in: ključnih besedah
Keywords: ideal, I-quasi-valuation map, I-valuation map, quasi-metric
Published: 01.12.2019; Views: 2001; Downloads: 0
.pdf Fulltext (261,47 KB)

Hashem Bordbar, Young Bae Jun, 2017, original scientific article

Abstract: The notions of (strong) quasi prime mapping on the set of all ideals, t- type weak closure operation, and tender (resp., naive, sheer, feeble tender) weak closure operation are introduced, and their relations and properties are investigated. Conditions for a weak closure operation to be of t-type are provided. Given a weak closure operation, conditions for the new weak closure operation to be of t-type and to be a naive (sheer, feeble tender) weak closure operation are considered. We show that the new weak closure operation is the smallest tender weak closure operation containing the given weak closure operation.
Found in: ključnih besedah
Keywords: (strong) quasi prime mapping, t-type weak closure operation, naive (sheer, tender, feeble tender) weak closure operation.
Published: 02.12.2019; Views: 2135; Downloads: 0
.pdf Fulltext (85,80 KB)

A New Type of Fuzzy Quasi-ideals of Ordered Semigroups
Irina Cristea, Ahsan Mahboob, Noor Mohammad Khan, 2020, original scientific article

Found in: ključnih besedah
Keywords: ordered semigroup, fuzzy subset, fuzzy quasi ideal
Published: 14.05.2020; Views: 1682; Downloads: 0
.pdf Fulltext (129,69 KB)

Electronic properties of phases in the quasi-binary Bi[sub]2Se[sub]3-Bi[sub]2S[sub]3 system
Zipporah Rini Benher, Sandra Gardonio, Mattia Fanetti, Paolo Moras, Asish K. Kundu, Chiara Bigi, Matjaž Valant, 2021, original scientific article

Abstract: We explored the properties of the quasi-binary Bi2Se3–Bi2S3 system over a wide compositional range. X-ray diffraction analysis demonstrates that rhombohedral crystals can be synthesized within the solid solution interval 0–22 mol% Bi2S3, while at 33 mol% Bi2S3 only orthorhombic crystals are obtained. Core level photoemission spectroscopy reveals the presence of Bi3+, Se2− and S2− species and the absence of metallic species, thus indicating that S incorporation into Bi2Se3 proceeds prevalently through the substitution of Se with S. Spin- and angle-resolved photoemission spectroscopy shows that topological surface states develop on the surfaces of the Bi2Se3−ySy (y ≤0.66) rhombohedral crystals, in close analogy with the prototypical case of Bi2Se3, while the orthorhombic crystals with higher S content turn out to be trivial semiconductors. Our results connect unambiguously the phase diagram and electronic properties of the Bi2Se3–Bi2S3 system.
Found in: ključnih besedah
Keywords: topological insulator, quasi-binary Bi2Se3-Bi2S3 system, electronic properties
Published: 29.03.2021; Views: 1357; Downloads: 0
.pdf Fulltext (4,69 MB)

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