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Wyświetlanie 1-15 z 170
Tytuł:
Injective hyperbolicity of domains
Autorzy:
Overholt, Marius
Powiązania:
https://bibliotekanauki.pl/articles/1311489.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
invariant metric
Kobayashi-Royden metric
Hahn metric
S-metric
Opis:
The pseudometric of Hahn is identical to the Kobayashi-Royden pseudometric on domains of dimension greater than two. Thus injective hyperbolicity coincides with ordinary hyperbolicity in this case.
Źródło:
Annales Polonici Mathematici; 1995, 62, 1; 79-82
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Completeness of the Bergman metric on non-smooth pseudoconvex domains
Autorzy:
Chen, Bo
Powiązania:
https://bibliotekanauki.pl/articles/1294051.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Bergman metric
Opis:
We prove that the Bergman metric on domains satisfying condition S is complete. This implies that any bounded pseudoconvex domain with Lipschitz boundary is complete with respect to the Bergman metric. We also show that bounded hyperconvex domains in the plane and convex domains in $ℂ^n$ are Bergman comlete.
Źródło:
Annales Polonici Mathematici; 1999, 71, 3; 241-251
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cone 2-metric space nad Fixed point theorem of contractive mappings
Autorzy:
Singh, B.
Jain, Shishir
Bhagat, Prakash
Powiązania:
https://bibliotekanauki.pl/articles/746380.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Cone 2-metric space
Fixed point
Cone metric space
2-metric space
Ordered Banach space
Opis:
In this paper we introduce cone 2-metric space and prove some fixed point theorems of a contractive mapping on a cone 2-metric space.
Źródło:
Commentationes Mathematicae; 2012, 52, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Closed Formulae for the Strong Metric Dimension of Lexicographic Product Graphs
Autorzy:
Kuziak, Dorota
Yero, Ismael G.
Rodríguez-Velázquez, Juan A.
Powiązania:
https://bibliotekanauki.pl/articles/31340465.pdf
Data publikacji:
2016-11-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
strong metric dimension
strong metric basis
strong metric generator
lexicographic product graphs
Opis:
Given a connected graph G, a vertex w ∈ V (G) strongly resolves two vertices u, v ∈ V (G) if there exists some shortest u − w path containing v or some shortest v − w path containing u. A set S of vertices is a strong metric generator for G if every pair of vertices of G is strongly resolved by some vertex of S. The smallest cardinality of a strong metric generator for G is called the strong metric dimension of G. In this paper we obtain several relationships between the strong metric dimension of the lexicographic product of graphs and the strong metric dimension of its factor graphs.
Źródło:
Discussiones Mathematicae Graph Theory; 2016, 36, 4; 1051-1064
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isometric embedding into spaces of continuous functions
Autorzy:
Villa, Rafael
Powiązania:
https://bibliotekanauki.pl/articles/1218403.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
metric space
Banach space
metric linear dimension
Opis:
We prove that some Banach spaces X have the property that every Banach space that can be isometrically embedded in X can be isometrically and linearly embedded in X. We do not know if this is a general property of Banach spaces. As a consequence we characterize for which ordinal numbers α, β there exists an isometric embedding between $C_0(α+1)$ and $C_0(β+1)$.
Źródło:
Studia Mathematica; 1998, 129, 3; 197-205
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computing the Metric Dimension of a Graph from Primary Subgraphs
Autorzy:
Kuziak, Dorota
Rodríguez-Velázquez, Juan A.
Yero, Ismael G.
Powiązania:
https://bibliotekanauki.pl/articles/31342126.pdf
Data publikacji:
2017-02-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
metric dimension
metric basis
primary subgraphs
rooted product graphs
corona product graphs
Opis:
Let G be a connected graph. Given an ordered set W = {w1, . . ., wk} ⊆ V (G) and a vertex u ∈ V (G), the representation of u with respect to W is the ordered k-tuple (d(u, w1), d(u, w2), . . ., d(u, wk)), where d(u, wi) denotes the distance between u and wi. The set W is a metric generator for G if every two different vertices of G have distinct representations. A minimum cardinality metric generator is called a metric basis of G and its cardinality is called the metric dimension of G. It is well known that the problem of finding the metric dimension of a graph is NP-hard. In this paper we obtain closed formulae for the metric dimension of graphs with cut vertices. The main results are applied to specific constructions including rooted product graphs, corona product graphs, block graphs and chains of graphs.
Źródło:
Discussiones Mathematicae Graph Theory; 2017, 37, 1; 273-293
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Design of an Objective Metric and Construction of a Prototype System for Monitoring Perceived Quality (QoE) of Video Sequences
Autorzy:
Janowski, L.
Leszczuk, M.
Papir, Z.
Romaniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/307891.pdf
Data publikacji:
2011
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
mean opinion score
no reference metric
objective metric
quality of experience
video artefacts
Opis:
The paper presents different no reference (NR) objective metrics addressing the most important artefacts for raw (source) video sequences (noise, blur, exposure) and those introduced by compression (blocking, flickering) which can be used for assessing quality of experience. The validity of all metrics was verified under subjective tests.
Źródło:
Journal of Telecommunications and Information Technology; 2011, 3; 87-94
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
All metric bases and fault-tolerant metric dimension for square of grid
Autorzy:
Saha, Laxman
Basak, Mithun
Tiwary, Kalishankar
Powiązania:
https://bibliotekanauki.pl/articles/2048644.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
code
resolving set
metric dimension
fault-tolerant resolving set
fault-tolerant metric dimension
Opis:
For a simple connected graph G = (V,E) and an ordered subset W = {w1, w2, . . . , wk} of V , the code of a vertex v ∈ V , denoted by code(v), with respect to W is a k-tuple (d(v, w1), . . . , d(v, wk)), where d(v, wt) represents the distance between v and wt. The set W is called a resolving set of G if code(u) ≠ code(v) for every pair of distinct vertices u and v. A metric basis of G is a resolving set with the minimum cardinality. The metric dimension of G is the cardinality of a metric basis and is denoted by β(G). A set F ⊂ V is called fault-tolerant resolving set of G if F \ {v} is a resolving set of G for every v ∈ F. The fault-tolerant metric dimension of G is the cardinality of a minimal fault-tolerant resolving set. In this article, a complete characterization of metric bases for G2 mn has been given. In addition, we prove that the fault-tolerant metric dimension of G2 mn is 4 if m + n is even. We also show that the fault-tolerant metric dimension of G2 mn is at least 5 and at most 6 when m + n is odd.
Źródło:
Opuscula Mathematica; 2022, 42, 1; 93-111
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anima, Spiritus, Mens in Sepulchral Inscriptions from the Carmina Latina Epigraphica. Philological Approximations
Autorzy:
Gacia, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/2158382.pdf
Data publikacji:
2022-09-26
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
carmina epigraphica
metric sepulchral inscriptions,
anima
spiritus
mens
corpus
caro
metric sepulchral inscriptions
Opis:
The subject of this study is the meaning of the words anima, spiritus and mens in the metrical sepulchral inscriptions in the Carmina Latina Epigraphica collection published at the end of the 19th century by Franz Buecheler. This collection comprises almost 1,900 texts, of which around 1,400 are funerary and, particularly, sepulchral inscriptions. This article consists of three sections. The first contains general comments on Roman sepulchral inscriptions. The second, and most important part uses a conventional philological method to analyze the words in the source texts that denote the immaterial aspect of the human being that continues after death. The analysis of the texts reveals that the word anima occurs about 80 times, spiritus – 20, and mens only three times. These three words stand for what is usually expressed by the word “soul,” that is, the spiritual, immaterial aspect of the human being. Conclusions are presented gradually as the analytical compilation proceeds. Firstly, there is no semantic difference between anima and spiritus; although the word animus which is close to the three words discussed in this paper does not occur in this sense in the inscriptions. Secondly, both pagan and Christian inscriptions emphasize the dichotomy between anima or spiritus and corpus or caro (alternatively membra); some Christian inscriptions, pointing to this dichotomy, express belief in the resurrection. Thirdly, despite the difference in beliefs, Roman worshipers and Christians used very similar patterns of statements about the posthumous fate of the soul, for example, astra tenent animam, astra fovent animam, anima migravit ad astra or spiritus astra tenet, spiritus petit ad astra, mens caeli perget ad astra, which means that the Christian funerary language did not develop its distinct terminology for several centuries. The third section is a very brief summary of the study carried out.
Źródło:
Verbum Vitae; 2022, 40, 3; 675-690
1644-8561
2451-280X
Pojawia się w:
Verbum Vitae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O ilości nierównoważnych metryk
On non-equivalent metrics on a uncountable set
Autorzy:
Zieliński, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1791034.pdf
Data publikacji:
2018-06-01
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
nonequivalent metrics
metrizability
metric spaces
Opis:
It is well known that there exist many metrics on a non-emptyset. In the case of $(X, \varrho)$ − a finite metric set, it can be easily shown that all the metrics on X are equivalent. This paper examines the number of non-equivalent metrics on uncountably infinite sets.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia; 2017, 9; 139-152
2080-9751
2450-341X
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weak Total Resolvability In Graphs
Autorzy:
Casel, Katrin
Estrada-Moreno, Alejandro
Fernau, Henning
Rodríguez-Velázquez, Juan Alberto
Powiązania:
https://bibliotekanauki.pl/articles/31341108.pdf
Data publikacji:
2016-02-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
metric dimension
resolving set
weak total metric dimension
weak total resolving set
adjacency dimension
graph operations
Opis:
A vertex v ∈ V (G) is said to distinguish two vertices x, y ∈ V (G) of a graph G if the distance from v to x is di erent from the distance from v to y. A set W ⊆ V (G) is a total resolving set for a graph G if for every pair of vertices x, y ∈ V (G), there exists some vertex w ∈ W − {x, y} which distinguishes x and y, while W is a weak total resolving set if for every x ∈ V (G)−W and y ∈ W, there exists some w ∈ W −{y} which distinguishes x and y. A weak total resolving set of minimum cardinality is called a weak total metric basis of G and its cardinality the weak total metric dimension of G. Our main contributions are the following ones: (a) Graphs with small and large weak total metric bases are characterised. (b) We explore the (tight) relation to independent 2-domination. (c) We introduce a new graph parameter, called weak total adjacency dimension and present results that are analogous to those presented for weak total dimension. (d) For trees, we derive a characterisation of the weak total (adjacency) metric dimension. Also, exact figures for our parameters are presented for (generalised) fans and wheels. (e) We show that for Cartesian product graphs, the weak total (adjacency) metric dimension is usually pretty small. (f) The weak total (adjacency) dimension is studied for lexicographic products of graphs.
Źródło:
Discussiones Mathematicae Graph Theory; 2016, 36, 1; 185-210
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tree-based control space structures for discrete metric sources in 3D meshing
Autorzy:
Głut, Barbara
Jurczyk, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/305686.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
control space
kd-trees
octree
anisotropic metric
mesh generation and adaptation
discrete metric sources
Opis:
This article compares the different variations of the octree and kd-tree structures used to create a control space based on a set of discrete metric point-sources. The control space thus created supervises the generation of the mesh providing efficient access to the required information on the desired shape and size of the mesh elements at each point of the discretized domain. Structures are compared in terms of computational and memory complexity as well as regarding the accuracy of the approximation of the set of discrete metric sources in the created control space structure.
Źródło:
Computer Science; 2019, 20 (4); 493-509
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Minkowskis metric in measuring changes of concentration of value added in agriculture, forestry, fishing and hunting sectors
Zastosowanie metryki Minkowskiego do pomiaru zmian koncentracji wartości dodanej w sektorach rolnictwa, leśnictwa, łowiectwa i rybactwa
Autorzy:
Binderman, Z.
Borkowski, B.
Szczesny, W.
Powiązania:
https://bibliotekanauki.pl/articles/37789.pdf
Data publikacji:
2015
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
Minkowski metric system
Minkowski tensor zob.Minkowski metric system
concentration coefficient
added value
agriculture
forestry
fishing
hunting
Opis:
This work is a direct continuation of a previous work by the authors that dealt with construction of new coeffi cients of concentration by using Minkowski’s metric ρp(1 ≤ p ≤ ∞). The following work gives examples of applications of those metrics in agriculture, forestry, fi shing and hunting sectors. It also studies the pattern of changes of concentration of added value created in those sectors by comparisons with other sectors.
Praca jest bezpośrednią kontynuacją pracy autorów dotyczącej konstrukcji nowych wskaźników koncentracji, przy użyciu metryki Minkowskiego ρp (1 ≤ p ≤ ∞). W niniejszym artykule podano zastosowanie tych wskaźników w sektorze rolnictwa, leśnictwa, łowiectwa i rybactwa. Zbadano jak przebiegają zmiany koncentracji wartości dodanej wypracowanej w tym sektorze, dokonując porównań z innymi sektorami.
Źródło:
Acta Scientiarum Polonorum. Oeconomia; 2015, 14, 1
1644-0757
Pojawia się w:
Acta Scientiarum Polonorum. Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trichodina pediculus Ehrenberg, 1838 in roach Rutilus rutilus [L.], metric and meristic data
CHARAKTERYSTYKA MORFOMETRYCZNA I MERYSTYCZNA TRICHODINA PEDICULUS EHRENBERG, 1838 Z PLOCI, RUTILUS RUTILUS (L.)
Autorzy:
Bielecki, A.
Dzika, E.
Powiązania:
https://bibliotekanauki.pl/articles/2148100.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Lake Dgal Wielki
parasite
Rutilus rutilus
meristic measurement
meristic data
metric measurement
Trichodina pediculus
roach
metric data
Opis:
During the parasitological studies in Dgał Wielki Lake 32 specimens of Trichodina pediculus were collected from roaches (Rutilus rutilus). T. pediculus were subjected to the metric and meristic measurements. High correlation factors significance was obtained between the following data: body diameter and adhesive disc diameter with border membrane, adhesive disc diameter without border membrane, denticulate ring diameter, height of denticle. However no correlation significance between body diameter and number of denticles was found.
Źródło:
Wiadomości Parazytologiczne; 2001, 47, 3; 285-290
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 170

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