Search results for " cardinal"
showing 10 items of 23 documents
Cardinal estimates involving the weak Lindelöf game
2021
AbstractWe show that if X is a first-countable Urysohn space where player II has a winning strategy in the game $$G^{\omega _1}_1({\mathcal {O}}, {\mathcal {O}}_D)$$ G 1 ω 1 ( O , O D ) (the weak Lindelöf game of length $$\omega _1$$ ω 1 ) then X has cardinality at most continuum. This may be considered a partial answer to an old question of Bell, Ginsburg and Woods. It is also the best result of this kind since there are Hausdorff first-countable spaces of arbitrarily large cardinality where player II has a winning strategy even in the weak Lindelöf game of countable length. We also tackle the problem of finding a bound on the cardinality of a first-countable space where player II has a wi…
Arezzo Tommaso Maria Raimondo
2006
Scheda biografica di cardinale siciliano
Astalli Pamphilj Camillo
2006
Scheda biografica di cardinale siciliano
«Español como si naciera allá». Giannettino Doria, cardinale della fazione spagnola (1604-1642)
2019
Il saggio ricostruisce l'apporto del cardinale genovese Giannettino Doria alle dinamiche interne alla cosiddetta "fazione spagnola", operante a Roma nella prima metà del '600. L'analisi incrocia temi storiograficamente densi e tra loro intrecciati: il gioco delle promozioni cardinalizie, la complessità e variabilità delle alleanze fazionali nel Sacro Collegio frutto di strategie “micropolitiche”, il ruolo presunto o effettivo di questi gruppi nel determinare gli esiti dei conclavi e, finalmente, il “teatro” della politica internazionale in scena alla corte romana. La congiuntura in cui queste plurime negoziazioni interagivano tra loro è quella del rinnovato protagonismo universalistico dell…
A smallest irregular oriented graph containing a given diregular one
2004
AbstractA digraph is called irregular if its vertices have mutually distinct ordered pairs of semi-degrees. Let D be any diregular oriented graph (without loops or 2-dicycles). A smallest irregular oriented graph F, F=F(D), is constructed such that F includes D as an induced subdigraph, the smallest digraph being one with smallest possible order and with smallest possible size. If the digraph D is arcless then V(D) is an independent set of F(D) comprising almost all vertices of F(D) as |V(D)|→∞. The number of irregular oriented graphs is proved to be superexponential in their order. We could not show that almost all oriented graphs are/are not irregular.
Lymphatic endothelial progenitors bud from the cardinal vein and intersomitic vessels in mammalian embryos.
2012
Abstract The lymphatic vasculature preserves tissue fluid balance by absorbing fluid and macromolecules and transporting them to the blood vessels for circulation. The stepwise process leading to the formation of the mammalian lymphatic vasculature starts by the expression of the gene Prox1 in a subpopulation of blood endothelial cells (BECs) on the cardinal vein (CV) at approximately E9.5. These Prox1-expressing lymphatic endothelial cells (LECs) will exit the CV to form lymph sacs, primitive structures from which the entire lymphatic network is derived. Until now, no conclusive information was available regarding the cellular processes by which these LEC progenitors exit the CV without co…
The Lady Half-Devoured by a Dragon and the Iconography of Saint Margaret of Antioch : Interpreting an Anonymous Invención in the Cancionero general (…
2018
Following in the footsteps of Ian Macpherson, I offer an interpretation of an anonymous invención found in the Cancionero general (11CG-517) and the British Library Cancionero (LB1-251). I maintain that the image displayed by the jouster was inspired by the iconography of the virgin-martyr Saint Margaret of Antioch, and I propose a theory about the identity of the lady addressed and, with less certainty, about the identity of the jouster and the occasion when the invención was displayed, using Pinar’s Juego trobado as a tool of research and invoking a passage on the sinfulness of the fashion among ladies and damsels for wearing hooped petticoats in a treatise by Hernando de Talavera.
Los fundamentos de la visualidad de la Prudencia
2015
ABSTRACT: Prudence, as one of the cardinal virtues, is a theme that has been dealt with by numerous thinkers ever since Antiquity. Its broad treatment with regards to different aspects, such as time, governance, selection or advice, has been the object of many visual representations, which show a great variety of attributes, the foundations of which we find in written sources. KEYWORDS: Prudence, Cardinal Virtues. RESUMEN: La Prudencia, como parte de las virtudes cardinales, ha sido tema a tratar por diferentes pensadores desde la Antiguedad. Su amplia consideracion, en relacion a diferentes aspectos, como el tiempo, el gobierno, la eleccion o el consejo, ha sido fruto de numerosas represen…
P-spaces and the Whyburn property
2009
We investigate the Whyburn and weakly Whyburn property in the class of $P$-spaces, that is spaces where every countable intersection of open sets is open. We construct examples of non-weakly Whyburn $P$-spaces of size continuum, thus giving a negative answer under CH to a question of Pelant, Tkachenko, Tkachuk and Wilson. In addition, we show that the weak Kurepa Hypothesis (a set-theoretic assumption weaker than CH) implies the existence of a non-weakly Whyburn $P$-space of size $\aleph_2$. Finally, we consider the behavior of the above-mentioned properties under products; we show in particular that the product of a Lindel\"of weakly Whyburn P-space and a Lindel\"of Whyburn $P$-space is we…