Search results for "Pace"

showing 10 items of 21903 documents

On singular integral and martingale transforms

2007

Linear equivalences of norms of vector-valued singular integral operators and vector-valued martingale transforms are studied. In particular, it is shown that the UMD(p)-constant of a Banach space X equals the norm of the real (or the imaginary) part of the Beurling-Ahlfors singular integral operator, acting on the X-valued L^p-space on the plane. Moreover, replacing equality by a linear equivalence, this is found to be the typical property of even multipliers. A corresponding result for odd multipliers and the Hilbert transform is given.

46B09General Mathematics46B20 (Secondary)Banach space42B15 (Primary) 42B2001 natural sciencesUpper and lower bounds010104 statistics & probabilitysymbols.namesakeCorollary60G46; 42B15 (Primary) 42B20; 46B09; 46B20 (Secondary)Classical Analysis and ODEs (math.CA)FOS: Mathematics60G460101 mathematicsMathematicsNormed vector spaceDiscrete mathematicsApplied MathematicsProbability (math.PR)010102 general mathematicsSingular integralSingular valueMathematics - Classical Analysis and ODEssymbolsHilbert transformMartingale (probability theory)Mathematics - ProbabilityTransactions of the American Mathematical Society
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On the existence of at least a solution for functional integral equations via measure of noncompactness

2017

In this article, we use fixed-point methods and measure of noncompactness theory to focus on the problem of establishing the existence of at least a solution for the following functional integral equation ¶ \[u(t)=g(t,u(t))+\int_{0}^{t}G(t,s,u(s))\,ds,\quad t\in{[0,+\infty[},\] in the space of all bounded and continuous real functions on $\mathbb{R}_{+}$ , under suitable assumptions on $g$ and $G$ . Also, we establish an extension of Darbo’s fixed-point theorem and discuss some consequences.

47H08Pure mathematicsBanach spaceAlgebra and Number Theory010102 general mathematicsMathematical analysisExtension (predicate logic)Space (mathematics)45N0501 natural sciencesMeasure (mathematics)Integral equation010101 applied mathematics54H25Settore MAT/05 - Analisi MatematicaBounded functionfunctional integral equationmeasure of noncompactnessSettore MAT/03 - Geometria0101 mathematicsAnalysisMathematicsBanach Journal of Mathematical Analysis
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Wind accretion in the massive X-ray binary 4U 2206+54: abnormally slow wind and a moderately eccentric orbit

2006

Massive X-ray binaries are usually classified depending on the properties of the donor star in classical, supergiant and Be X-ray binaries. The massive X-ray binary 4U 2206+54 does not fit in any of these groups, and deserves a detailed study to understand how the transfer of matter and the accretion on to the compact object take place. To this end we study an IUE spectrum of the donor and obtain a wind terminal velocity (v_inf) of ~350 km/s, which is abnormally slow for its spectral type. We also analyse here more than 9 years of available RXTE/ASM data. We study the long-term X-ray variability of the source and find it to be similar to that observed in the wind-fed supergiant system Vela …

4U 2206+54X-ray binaryBinary numberFOS: Physical sciencesOutflows Emission-lineOrbital eccentricityAstrophysicsWindsCompact starUNESCO::ASTRONOMÍA Y ASTROFÍSICAVelaAstrophysicsIndividual starsPhysicsAstrophysics (astro-ph)BD +53◦2790BeAstronomy and AstrophysicsOrbital period:ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia [UNESCO]Accretion (astrophysics)X-rays binariesX-rays individualsX-rays binaries ; X-rays individuals ; 4U 2206+54 ; Individual stars ; BD +53◦2790 ; Winds ; Outflows Emission-line ; BeSpace and Planetary ScienceUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogoniaSupergiant:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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CCDC 1409160: Experimental Crystal Structure Determination

2016

Related Article: Tsegaye Deyou, Ivan Gumula, Fangfang Pang, Amra Gruhonjic, Michael Mumo, John Holleran, Sandra Duffy, Paul A. Fitzpatrick, Matthias Heydenreich, Göran Landberg, Solomon Derese, Vicky Avery, Kari Rissanen, Máté Erdélyi, Abiy Yenesew|2015|J.Nat.Prod.|78|2932|doi:10.1021/acs.jnatprod.5b00581

4a5-Dihydro[13]dioxolo[67]chromeno[34-b][13]dioxolo[45-h]chromene-11b12(12H)-diolSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1441505: Experimental Crystal Structure Determination

2018

Related Article: Michael G. S. Londesborough, Jiří Dolanský, Tomáš Jelínek, John D. Kennedy, Ivana Císařová, Robert D. Kennedy, Daniel Roca-Sanjuán, Antonio Francés-Monerris, Kamil Lang, William Clegg|2018|Dalton Trans.|47|1709|doi:10.1039/C7DT03823B

5'6':56-conjuncto-(10'-(pyridine-N)-6'7':8'9'-di-muH-nido-decaborane)-(67:89:910-tri-muH-nido-decaborane)Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 2009112: Experimental Crystal Structure Determination

2020

Related Article: Jonathan Bould, Kamil Lang, Kaplan Kirakci, Luis Cerdán, Daniel Roca-Sanjuán, Antonio Francés-Monerris, William Clegg, Paul G. Waddell, Marcel Fuciman, Tomáš Polívka, Michael G. S. Londesborough|2020|Inorg.Chem.|59|17058|doi:10.1021/acs.inorgchem.0c02277

5'6':67-conjuncto-(22'-dichloro-11'33'44'-hexamethyl-6'7':8'9':9'10'-tri-muH-nido-decaborane)-(77'88'10'-pentamethyl-56:89:910-tri-muH-nido-decaborane) 5'6':67-conjuncto-(22'-dichloro-11'33'44'-hexamethyl-6'7':8'9':9'10'-tri-muH-nido-decaborane)-(77'88'1010'-hexamethyl-56:89:910-tri-muH-nido-decaborane)Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1952439: Experimental Crystal Structure Determination

2019

Related Article: Asmae Bousfiha, Abdou K. D. Dimé, Amelle Mankou-Makaya, Julie Echaubard, Mathieu Berthelot, Hélène Cattey, Anthony Romieu, Julien Roger, Charles H. Devillers|2020|Chem.Commun.|56|884|doi:10.1039/C9CC07351E

5101520-tetraphenylporphyrin-2-amineSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 258871: Experimental Crystal Structure Determination

2005

Related Article: V.Bohmer, B.Costisella, J.Gloede, S.Ozegowski, M.Schneider, I.Thondorf|2005|Eur.J.Org.Chem.|2005|2788|doi:10.1002/ejoc.200400906

51016212732-hexakis(t-Butyl)-heptacyclo[28.3.1.137.1812.11418.11923.12529]nonatriaconta-1(34)357(39)81012(38)141618(37)192123(36)252729(35)3032-octadecaene-343539:363738-diphosphateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 272781: Experimental Crystal Structure Determination

2006

Related Article: C.Danila, V.Bohmer, M.Bolte|2005|Org.Biomol.Chem.|3|3508|doi:10.1039/b507780j

5111723-Tetra-t-butyl-2527-bis(cyanomethoxy)-2628-diallyloxycalix(4)areneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1401638: Experimental Crystal Structure Determination

2015

Related Article: Fangfang Pan, N. Kodiah Beyeh, Kari Rissanen|2015|RSC Advances|5|57912|doi:10.1039/C5RA11905G

5111723-tetrakis((cyclohexylammonio)methyl)-281420-tetramethyl-46101216182224-octahydroxycalix(4)arene tetrakis(trifluoromethanesulfonate) 14-dioxane solvate dihydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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