Search results for " Cardinali"
showing 8 items of 8 documents
Biografia essenziale di Francesco Maria Mantica
2011
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.
I due inediti busti reliquiari d’argento del Tesoro di San Mauro Castelverde (Pa). Don Vincenzo Greco e la circolazione delle reliquie dopo il Concil…
2022
Si esamina la diffusione e la circolazione delle reliquie da Roma alla Sicilia e la conseguente proliferazione, a seguito dei dettami del Concilio di Trento recepiti dai vari Sinodi diocesani, di sacre custodie in metallo prezioso o in legno. Vengono, infatti, indagati alcuni reliquiari d’argento che, custoditi nei Tesori siciliani, sono contestualizzati nella pertinente temperie storico-culturale. Due di essi, inediti e dalla tipologia a busto, sono conservati nel Tesoro della Matrice di San Mauro Castelverde (Pa). Della suppellettile liturgica contenente le sacra vestigia di S. Vittoria, sono stati individuati autore e committenti. L’altra inedita opera, voluta dal marchese Simone I Venti…
Mantica Francesco
2009
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…
«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…
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…
The article a(n) in English quantifying expressions: A default marker of cardinality
2020
Certain English quantificational expressions feature what appears to be an indefinite article, e.g. 'a bunch, a few, a hundred'. These can be divided into three types of quantifying expressions: pseudopartitives ('a lot, a bunch, a ton'), article-requiring quantifiers ('a few, a couple, a hundred'), and article-free quantifiers ('three, many, several'); article-free quantifiers have an article under certain circumstances, e.g. modification by an adjective ('a surprising 30 …'). While standard analyses would take the article in these expressions to be a D head, it is argued here that the article is not in D, nor is it singular or count, as evidenced by its (lack of an) interaction with verba…