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25172. Two extension theorems. Modular functions on complemented lattices
- Creator:
- Weber, Hans
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- complemented lattices, orthomodular lattices, exhaustive modular functions, measures, extension, Vitali-Hahn-Saks theorem, Nikodým theorems, and Liapunoff theorem
- Language:
- English
- Description:
- We prove an extension theorem for modular functions on arbitrary lattices and an extension theorem for measures on orthomodular lattices. The first is used to obtain a representation of modular vector-valued functions defined on complemented lattices by measures on Boolean algebras. With the aid of this representation theorem we transfer control measure theorems, Vitali-Hahn-Saks and Nikodým theorems and the Liapunoff theorem about the range of measures to the setting of modular functions on complemented lattices.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
25173. Two gynandromorphs of ixodes (ixodes) Pacificus (Acari: ixodidae) from California, U.S.A.
- Creator:
- Keirans, James E. and Lane, Robert S.
- Format:
- Type:
- model:internalpart and TEXT
- Language:
- English
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
25174. Two hemocyte populations in Triatoma infestans: ultrastructural and lectin-binding characterization
- Creator:
- Hypša, Václav and Grubhoffer, Libor
- Format:
- Type:
- model:internalpart and TEXT
- Language:
- English
- Description:
- Two distinct hemocyte populations are determined in the hemolymph of the triatomine bug Triatoma infestans Klug, oenocytoids and plasmatocytes, and their independent origin from separate stem cells is shown. Both hemocyte populations differ considerably in their morphology, ultrastructure and lectin-binding properties. While oenocytoids are quite uniform with easily definable cells which do not to bind any assayed lectin, the plasmatocytes are a very polymorphic population possessing several morphological types and displaying a positive reactivity with lectins.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
25175. Two ideals connected with strong right upper porosity at a point
- Creator:
- Bilet, Viktoriia, Dovgoshey, Oleksiy, and Prestin, Jürgen
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- matematika, mathematics, one-side porosity, local strong upper porosity, completely strongly porous set, ideal, 13, and 51
- Language:
- English
- Description:
- Let SP be the set of upper strongly porous at 0 subsets of \mathbb{R}^{+} and let Î(SP) be the intersection of maximal ideals I\subseteq SP. Some characteristic properties of sets E \in Î(SP) are obtained. We also find a characteristic property of the intersection of all maximal ideals contained in a given set which is closed under subsets. It is shown that the ideal generated by the so-called completely strongly porous at 0 subsets of \mathbb{R}^{+} is a proper subideal of Î(SP). Earlier, completely strongly porous sets and some of their properties were studied in the paper V.Bilet, O.Dovgoshey (2013/2014)., Viktoriia Bilet, Oleksiy Dovgoshey, Jürgen Prestin., and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
25176. Two identities related to Dirichlet character of polynomials
- Creator:
- Yao, Weili and Zhang, Wenpeng
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Dirichlet character of polynomials, sum analogous to Kloosterman sum, identity, and Gauss sum
- Language:
- English
- Description:
- Let $q$ be a positive integer, $\chi $ denote any Dirichlet character $\mod q$. For any integer $m$ with $(m, q)=1$, we define a sum $C(\chi, k, m; q)$ analogous to high-dimensional Kloosterman sums as follows: $$ C(\chi, k, m; q)=\sum _{a_1=1}^{q}{}' \sum _{a_2=1}^{q}{}' \cdots \sum _{a_k=1}^{q}{}' \chi (a_1+a_2+\cdots +a_k+m\overline {a_1a_2\cdots a_k}), $$ where $a\cdot \overline {a}\equiv 1\bmod q$. The main purpose of this paper is to use elementary methods and properties of Gauss sums to study the computational problem of the absolute value $|C(\chi, k, m; q)|$, and give two interesting identities for it.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
25177. Two measures for the stability of Extended Fibonacci Cubes
- Creator:
- Dundar, P. and Kilic, E.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Network topology, neural network architecture, connectivity, quantitative modeling of networks, graph stability, and Extended Fibonacci Cubes
- Language:
- English
- Description:
- The Fibonacci Cube is an interconnection network that gets many desirable properties that are very important in the network design, network stability and applications. The extended Fibonacci Cube is a new network topology. The vulnerability value of a communication network shows the resistance of the network after the disruption of some centres or connection lines until the communication breakdown. In a network, as the number of centres belonging to sub networks changes, the vulnerability of the network also changes and requires greater degrees of stability or less vulnerability. If the communication network is modelled by graph G, the deterministic measures tend to provide a worst-case analysis of some aspects of overall disconnection process. Many graph theoretical parameters have been used in the past to describe the stability of communication networks. There are few parameters such as integrity, neighbour-integrity and tenacity number giving the vulnerability. Also, in the neighbour-integrity, if a station is destroyed, the adjacent stations will be betrayed so that the betrayed stations become useless to network as a whole. In this paper we study the stability of the Extended Fibonacci Cube using the integrity and neighbour-integrity. We compared the obtained results with the results of the other network topologies. We saw that, for two graphs G1 and G2 that have same number of vertices if k(G1) > k(G2), then I(G1) > I(G2) and NI(G1)< NI(G2).
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
25178. Two models of epileptic spike-and-wave rhythm in rats are differently influenced by ethosuximide
- Creator:
- Mareš, P., Kubová, H., and Mocková, M.
- Type:
- article, model:article, and TEXT
- Subject:
- EEG, spike-and-wave, seizures, ethosuximide, and rat
- Language:
- English
- Description:
- Epileptic afterdischarges induced by electrical stimulation of the sensorimotor cortex as well as minimal metrazol seizures are characterized by EEG spike-and-wave rhythm and nearly the same motor pattern of clonic seizures. The action of ethosuximide on these two models was tested in adult rats with implanted electrodes. Cortical afterdischarges remained practically uninfluenced by ethosuximide (62.5 or 125 mg/kg i.p.) whereas minimal metrazol seizures were suppressed in a dose-dependent manner (doses of 31.25, 62.5 and 125 mg/kg i.p. were used). Present results in connection with recent data on the abolition of spike-and-wave rhythm elicited by low systemic doses of pentylenetetrazol suggest that spike-and-wave rhythm does not represent a single entity.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
25179. Two more Homeric scenes in India
- Creator:
- Derrett, J. Duncan M.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- India and Homeric Hymns
- Language:
- English
- Description:
- That early Buddhists were acquainted with the Homeric Hymns is vehemently suspected. That Homer’s epics were used by them has not been suspected. Buddhists of perhaps the third to fourth centuries clearly used two episodes, the Pyre of Patroclus and Odysseus’ Bow. Adaptations and variations lead to a suspicion that the stories, admired by Buddhist authors, were worked over more than once. That the Greek text of the original epics was used at that relatively late period has not been established.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
25180. Two new and two redescribed species of Anonchotaenia (Cestoda: Paruterinidae) from South American birds
- Creator:
- Phillips, Anna J., Georgiev, Boyko B., Waeschenbach, Andrea, and Mariaux, Jean
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Anonchotaenia prolixa, Anonchotaenia vaslata, Anonchotaenia brasiliensis, Anonchotaenia macrocephala, new species, new host record, Brazil, Chile, Paraguay, and new geographical record
- Language:
- English
- Description:
- Morphological examination of novel specimens of paruterinid cestodes from passerine birds from Brazil and Chile and of museum specimens from Paraguay revealed two new species: Anonchotaenia prolixa sp. n. from Elaenia albiceps chilensis Hellmayr from Chile, and Anonchotaenia vaslata sp. n. from Tyrannus melancholicus (Vieillot) (type host) and Myiodynastes maculatus (Statius Muller) from Paraguay. The generic diagnosis of Anonchotaenia Conn, 1900 is amended, prompted by the presence of the armed cirrus and the elongated cirrus sac of A. prolixa. Two species were redescribed: Anonchotaenia brasiliensis Fuhrmann, 1908 from Tachyphonus coronatus (Vieillot) and Thraupis cyanoptera (Vieillot) (new host records) from Brazil, and Thraupis sayaca (Linnaeus) and Volatinia jacarina (Linnaeus) from Paraguay (new host and geographic records); and Anonchotaenia macrocephala Fuhrmann, 1908 from Tachycineta leucorrhoa (Vieillot) (new host record) from Brazil, Tachycineta meyeni (Cabanis) from Chile (new host and geographic record) and Stelgidopteryx ruficollis (Vieillot) from Paraguay (new host and geographic record). Scanning electron microscopy of A. brasiliensis and A. macrocephala revealed less microthrix variation than has been reported for other cyclophyllidean taxa. Sequence data were generated for nuclear ssr- and lsr-DNA and mitochondrial rrnL and cox1 for A. prolixa, A. brasiliensis, and A. macrocephala. Maximum likelihood and Bayesian inference analyses supported each species as distinct, but revealed cryptic diversity among A. brasiliensis specimens from different host families. New host records of A. brasiliensis and A. macrocephala prompted a formal assessment of host specificity. Anonchotaenia prolixa was found to be oioxenous (HSS = 0), A. vaslata and A. macrocephala were found to be metastenoxenous (HSS = 3.000 and 3.302, respectively), whereas A. brasiliensis was found to be euryxenous (HSS = 5.876). Anonchotaenia brasiliensis has been found parasitising several species of different passerine families that participate in mixed-species foraging flocks in the Atlantic Forest. A diversity of species of other families join these flocks and are among the substantial number of South American passerine species yet to be examined for cestodes.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public