Search results for "Characters"
showing 10 items of 83 documents
A multivariate morphometric analysis of diagnostic traits in southern Italy and Sicily pubescent oaks
2020
AbstractSpecies identification within the species complex ofQ. pubescensis a well-known taxonomic challenge among European botanists. Some of the specific pubescent oak binomials currently accepted in various European floras and checklists were originally described in Sicily and southern Calabria. As a consequence, several species belonging to the pubescent oaks group (Q. pubescens,Q. amplifolia,Q. congesta,Q. dalechampii,Q. leptobalanaandQ. virgiliana) are reported in the taxonomic and phytosociological literature. To verify whether it was possible to associate a diverse set of morphological characters with each of these different taxa, thirteen natural populations of pubescent oak from Si…
First record ofTetranychus ludeniZacher (Acariformes: Tetranychidae) in Italy
2018
Tetranychus ludeni Zacher is reported here for the first time in Italy. It was found on some cultivated and spontaneous plants, often associated with Tetranychus urticae Koch. Four phytoseiid mites, widely distributed in the Mediterranean countries, Phytoseiulus persimilis Athias-Henriot, Iphiseius degenerans Berlese, Typhlodromus (Anthoseius) kerkirae Swirski and Ragusa, and Typhlodromus (Anthoseius) transvaalensis Nesbitt, were found associated with T. ludeni In Sicily. The morphological characters for the identification of the four Italian Tetranychus species are also reported.
Postharvest quality and sensory attributes of Ficus carica L
2017
The aim of this research was to evaluate the relationship between some physical and chemical characteristics and sensory descriptors of fig fruits ‘Dottato’ and ‘Melanzana’, belonging to the national germplasm bank of fig trees and cultivated in Southern Italy. The sensory principal descriptors used are external appearance, skin color, pulp color, odor, sweetness, stickiness, bitterness, juiciness, firmness, tannic taste and presence of achenes. Fresh weight, total soluble solids (TSS), titratable acidity (TA), TSS:TA, firmness, and sensory properties changed with cultivar. SSC was more correlated with sensory attributes than TA, but other factors may also be important in controlling this r…
Architectures en vertige et « topographie » du personnage chez Julien Green
2018
L’architettura è senza dubbio uno degli assi fondamentali attorno al quale si dispiega l’immaginario di Julien Green, la cui opera è ricca di dimore, castelli, camere, biblioteche, spazi urbani. Attraverso l’analisi di tre romanzi (Mont-Cinère, Adrienne Mesurat, Minuit), l’articolo si propone di mostrare, per mezzo del riferimento metodologico ai Séminaires e agli Écrits di Lacan, che gli spazi architettonici rappresentati assumono nello scrittore una dimensione trascendente che realizza lo slittamento dagli spazi reali alla topologia soggettiva dei personaggi. Architecture is undeniably one of the fundamental axes around which the imagery of Julien Green unfolds, whose work is full of hous…
Representations of finite groups: Blocks relative to a normal subgroup
2019
Algunes de les principals conjectures en Teoria de Representacions de Grups Finits admeten refinaments en termes de p-blocs de Brauer. Actualment només es veu un camí per a atacar aquest tipus de conjectures: reduir-les a problemes de grups simples i utilitzar la Classificació dels Grups Finits Simples per a resoldre-les. Entenem per reduir a un problema de grups simples que el problema té solució sempre que es comproven una sèrie de condicions per a tots els grups finits simples. Per descomptat, els subgrups normals (i els seus caracters irreductibles) juguen un paper fonamental en aquest procés. Una de las tècniques principals utilitzades en la reducció de certs problemes de teoria de car…
Characters, bilinear forms and solvable groups
2016
Abstract We prove a number of results about the ordinary and Brauer characters of finite solvable groups in characteristic 2, by defining and using the concept of the extended nucleus of a real irreducible character. In particular we show that the Isaacs canonical lift of a real irreducible Brauer character has Frobenius–Schur indicator +1. We also show that the principal indecomposable module corresponding to a real irreducible Brauer character affords a quadratic geometry if and only if each extended nucleus is a split extension of a nucleus.
Rationality and normal 2-complements
2008
Abstract We study the finite groups in which every irreducible rational valued character is linear, and those in which every rational element is central.
Characters and Blocks of Finite Groups
1998
This is a clear, accessible and up-to-date exposition of modular representation theory of finite groups from a character-theoretic viewpoint. After a short review of the necessary background material, the early chapters introduce Brauer characters and blocks and develop their basic properties. The next three chapters study and prove Brauer's first, second and third main theorems in turn. These results are then applied to prove a major application of finite groups, the Glauberman Z*-theorem. Later chapters examine Brauer characters in more detail. The relationship between blocks and normal subgroups is also explored and the modular characters and blocks in p-solvable groups are discussed. Fi…
Groups with exactly one irreducible character of degree divisible byp
2014
Let [math] be a prime. We characterize those finite groups which have precisely one irreducible character of degree divisible by [math] .
Large orbits ofp-groups on characters and applications to character degrees
2005
We prove that if ap-groupA acts on a solvablep′-groupG then there is a “large” orbit on the ordinary complex irreducible characters ofG. As a consequence of this theorem we obtain results that relate ordinary and Brauer character degrees.