Search results for "Angel"
showing 10 items of 287 documents
Increasing chains and discrete reflection of cardinality
2013
Combining ideas from two of our previous papers, we refine Arhangel'skii Theorem by proving a cardinal inequality of which this is a special case: any increasing union of strongly discretely Lindelof spaces with countable free sequences and countable pseudocharacter has cardinality at most continuum. We then give a partial positive answer to a problem of Alan Dow on reflection of cardinality by closures of discrete sets.
Infinite games and cardinal properties of topological spaces
2015
Inspired by work of Scheepers and Tall, we use properties defined by topological games to provide bounds for the cardinality of topological spaces. We obtain a partial answer to an old question of Bell, Ginsburg and Woods regarding the cardinality of weakly Lindel¨of first-countable regular spaces and answer a question recently asked by Babinkostova, Pansera and Scheepers. In the second part of the paper we study a game-theoretic version of cellularity, a special case of which has been introduced by Aurichi. We obtain a game-theoretic proof of Shapirovskii’s bound for the number of regular open sets in an (almost) regular space and give a partial answer to a natural question about the produ…
Cardinal invariants of cellular Lindelof spaces
2018
A space X is said to be cellular-Lindelof if for every cellular family $$\mathcal {U}$$ there is a Lindelof subspace L of X which meets every element of $$\mathcal {U}$$ . Cellular-Lindelof spaces generalize both Lindelof spaces and spaces with the countable chain condition. Solving questions of Xuan and Song, we prove that every cellular-Lindelof monotonically normal space is Lindelof and that every cellular-Lindelof space with a regular $$G_\delta $$ -diagonal has cardinality at most $$2^\mathfrak {c}$$ . We also prove that every normal cellular-Lindelof first-countable space has cardinality at most continuum under $$2^{<\mathfrak {c}}=\mathfrak {c}$$ and that every normal cellular-Lindel…
Aristotele e Dante, filosofi della variabilità linguistica
2010
Diversamente da quanto si legge in letteratura, Aristotele fu un filosofo che ha messo a fuoco le cause naturali della variabilità, nel tempo e nello spazio, delle lingue verbali. Dante, pur non conoscendo la lingua greca e potendo accedere alle opere aristoteliche tramite le traduzioni latine, teorizza il linguaggio in sintonia con questo aspetto della filosofia aristotelica. Nel saggio si mette in luce la somiglianza tra la locutio vulgaris teorizzata nel De vulgari eloquentia e la nozione di dialektos descritta da Aristotele nelle opere biologiche. Vengono anche esaminate le ragioni aristoteliche del motivo per cui secondo Dante gli angeli non hanno bisogno di locutio vulgaris e quindi n…
Balance as Symbol and Object of Art
2014
The symbolic use of the balance is reviewed, covering mythology and religion, icons and arts, its use in astronomy and astrology as well as in literature and music. In Old Egypt many paintings show men’s height balances symbolically used for soul weighing. In Greece the fate balance was known. In the Roman Empire the symbolic use changed to justice fairness, and legitimacy of coins and this holds until modern time. In the Bible and the Koran fair weighing in trade are demanded. In the Book of Revelation the balance is symbol for misery. Michael archangel became guide of the deceased to the last judgement and weighed the poor sinner against his good deeds. In the witch balance the mass of th…
Le Istituzioni di Gaio e il Glücksstern di Niebuhr
2012
Sulla base della documentazione manoscritta, anche inedita, e di altre fonti si ripercorrono le vicende che portarono nel 1816 Barthold Georg Niebuhr a scoprire il palinsesto delle Istituzioni di Gaio nella Biblioteca Capitolare di Verona e si discute criticamente la casualità di tale scoperta.
Der ‚Glücksstern‘ Niebuhrs und die Institutionen des Gaius. Deutsch-italienische Wissenschaftspolitik im frühen 19. Jahrhundert, 2. erweiterte Auflage
2014
In diesem Buch ist die Geschichte der Wiederentdeckung des Palimpsests mit den Gaius-Institutionen durch Barthold Georg Niebuhr neu verhandelt. Die jüngst wiederbelebte These von einer „angekündigten Entdeckung“ wird in Frage gestellt. Das verzerrte Bild des Niebuhrschen Fundes in der Sicht dieser These ist kein Zufall. Es stellt sich vielmehr als später Nachklang wissenschaftlicher Querelen jener Zeit dar. Die These der „angekündigten Entdeckung“ erweist sich bei gründlicher Nachprüfung anhand der Quellen als spekulativ, der Fund ist als eigene Leistung Niebuhrs anzuerkennen. In dieser Abhandlung werden auch bislang unbeachtete oder missverstandene handschriftliche Dokumente textgetreu edi…
Le ultime lettere del carteggio di Niebuhr e Mai (febbraio 1828 – gennaio 1829)
2014
Alla luce delle ultime lettere del carteggio fra Barthold Georg Niebuhr e Angelo Mai, di cui si pubblica il testo sulla base degli originali, si ricostruiscono i rapporti fra i due studiosi.
IL BEATO ARCANGELO DA CALATAFIMI E LE «MEMORIE» DI PIETRO LONGO
2011
L'osservanza nel secolo XV e il rapporto con le comunità urbane
"Angelus novus. Saggi e frammenti" di Walter Benjamin
2008
Contributo sull'antologia di saggi e frammenti, a cura di R. Solmi, che fu fondamentale per far comprendere e conoscere il pensiero di W. Benjamin in Italia.