Search results for "Simo"
showing 10 items of 459 documents
Span programs for functions with constant-sized 1-certificates
2012
Besides the Hidden Subgroup Problem, the second large class of quantum speed-ups is for functions with constant-sized 1-certificates. This includes the OR function, solvable by the Grover algorithm, the element distinctness, the triangle and other problems. The usual way to solve them is by quantum walk on the Johnson graph. We propose a solution for the same problems using span programs. The span program is a computational model equivalent to the quantum query algorithm in its strength, and yet very different in its outfit. We prove the power of our approach by designing a quantum algorithm for the triangle problem with query complexity O(n35/27) that is better than O(n13/10) of the best p…
Enlarging the gap between quantum and classical query complexity of multifunctions
2013
Quantum computing aims to use quantum mechanical effects for the efficient performance of computational tasks. A popular research direction is enlarging the gap between classical and quantum algorithm complexity of the same computational problem. We present new results in quantum query algorithm design for multivalued functions that allow to achieve a large quantum versus classical complexity separation. To compute a basic finite multifunction in a quantum model only one query is enough while classically three queries are required. Then, we present two generalizations and a modification of the original algorithm, and obtain the following complexity gaps: Q UD (M′) ≤ N versus C UD (M′) ≥ 3N,…
La committenza gesuitica e la pittura a Palermo tra XVI e XVIII secolo
Il presente lavoro di ricerca mira ad approfondire e arricchire, mediante nuove acquisizioni, lo studio in merito alle opere pittoriche di committenza gesuitica custodite presso le fondazioni palermitane dell’Ordine: chiesa del Gesù a Casa Professa, Collegio Massimo dei Gesuiti, chiesa di San Stanislao Kostka e chiesa di San Francesco Saverio. A queste si aggiungono i dipinti di committenza della Compagnia trasferiti presso altre sedi. Ulteriore intento è quello di organizzare in maniera più organica la trattazione delle commissioni artistiche dell’Ordine a Palermo, che si presentava dispersiva e frammentaria. Tra i risultati più significativi si annovera il ritrovamento di un ciclo di affr…
Reconstructing the Phylogeny of the Human Chromosome 4 Synteny using Comparative Karyology and Genomic Data Analysis
2010
Abstract This work focuses on the evolution of the architecture of human chromosome 4 (HSA4) through the analysis of chromosomal regions that have been conserved over time, and the comparison of regions that have been involved in different rearrangements in placental lineages. As with most elements of the human genome, HSA4 is considered to be evolutionarily stable. A more detailed analysis indicates that the syntenic association has been reshuffled by a series of rearrangements, yielding different chromosomes in various taxa. In its ancestral eutherian state, HSA4 has a syntenic association with HSA8p. We investigated the complex origin of this human chromosome using three different approa…
Approximation of functions over manifolds : A Moving Least-Squares approach
2021
We present an algorithm for approximating a function defined over a $d$-dimensional manifold utilizing only noisy function values at locations sampled from the manifold with noise. To produce the approximation we do not require any knowledge regarding the manifold other than its dimension $d$. We use the Manifold Moving Least-Squares approach of (Sober and Levin 2016) to reconstruct the atlas of charts and the approximation is built on-top of those charts. The resulting approximant is shown to be a function defined over a neighborhood of a manifold, approximating the originally sampled manifold. In other words, given a new point, located near the manifold, the approximation can be evaluated…
«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…
Simone Geraci. Echos
2019
The essay was made on the occasion of Simone Geraci's solo show at the Quam gallery in Scicli, where the artist presented a very refined selection of his most recent artistic production. Geraci, who prefers the definition of painter to that of artist, is firmly convinced of the condition of painting as a living language, not devoid of narrative implications, and as an expressive tool that is still current and capable of great fascination.
Massimo Ciancimino: “Santu o dimoniu”
2010
L'articolo si propone come una breve riflessione sulla controversa figura di Massimo Ciancimino, figlio di "Don" Vito.
Theoretical absorption spectrum of the Ar–CO van der Waals complex
2003
The three-dimensional intermolecular electric dipole moment surface of Ar–CO is calculated at the coupled cluster singles and doubles level of theory with the aug-cc-pVTZ basis set extended with a 3s3p2d1f1g set of midbond functions. Using the rovibrational energies and wave functions of our recent study [J. Chem. Phys. 117, 6562 (2002)], temperature-dependent spectral intensities are evaluated and compared to available experimental data. Based on the theoretical spectrum, alternative assignments of the experimentally observed lines in the fundamental band of CO around 2160 and 2166 cm−1 are suggested. Thomas.Bondo@uv.es