Search results for "LB"

showing 10 items of 5653 documents

A numerical property of Hilbert functions and lex segment ideals

2017

We introduce the fractal expansions, sequences of integers associated to a number. We show that these sequences characterize the Osequences and encode some information about lex segment ideals. Moreover, we introduce numerical functions called fractal functions, and we use them to solve the open problem of the classification of the Hilbert functions of any bigraded algebra.

13F20 13A15 13D40Settore MAT/02 - AlgebraBigraded algebraLex segment idealMathematics::Commutative AlgebraHilbert functionFOS: MathematicsSettore MAT/03 - GeometriaCommutative Algebra (math.AC)Mathematics - Commutative AlgebraBigraded algebra Hilbert function Lex segment idealBigraded algebra; Hilbert function; Lex segment ideal
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On the Betti numbers of three fat points in P1 × P1

2019

In these notes we introduce a numerical function which allows us to describe explicitly (and nonrecursively) the Betti numbers, and hence, the Hilbert function of a set Z of three fat points whose support is an almost complete intersection (ACI) in P1 × P1 . A nonrecursively formula for the Betti numbers and the Hilbert function of these configurations is hard to give even for the corresponding set of five points on a special support in P2 and we did not find any kind of this result in the literature. Moreover, we also give a criterion that allows us to characterize the Hilbert functions of these special set of fat points.

13F20Fat points Hilbert functions Multiprojective spaces13A15Fat pointsMathematics - Commutative Algebra13D40Mathematics - Algebraic GeometrySettore MAT/02 - AlgebraFat points; Hilbert functions; Multiprojective spacesMultiprojective spacesSettore MAT/03 - GeometriaMathematics - Algebraic Geometry; Mathematics - Algebraic Geometry; Mathematics - Commutative Algebra; 13F20 13A15 13D40 14M0514M05Hilbert functions
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Tres tablas más que añadir al catálogo de Vicente Macip. (Albaida, h. 1468- Valencia, 1551)

2013

1551) Samper EmbizUNESCO::CIENCIAS DE LAS ARTES Y LAS LETRAS:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]h. 1468- ValenciaVicente 29 360211-5808 9678 Archivo de arte valenciano 367242 2013 94 4718364 Tres tablas más que añadir al catálogo de Vicente Macip. (Albaida
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Kokeellinen lähiö : Alvar Aallon kaupunkisuunnittelun periaatteet 1960-luvun lopulla Porvoon maalaiskunnan Gammelbackassa

2011

1960-lukulähiötAalto Alvarkokeellisuuselementtirakentaminenasuntotuotanto1970-lukukaupunkisuunnitteluPorvoon maalaiskuntaGammelbacka
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CCDC 1008816: Experimental Crystal Structure Determination

2015

Related Article: Bernd Elsler, Anton Wiebe, Dieter Schollmeyer, Katrin M. Dyballa, Robert Franke, Siegfried R. Waldvogel|2015|Chem.-Eur.J.|21|12321|doi:10.1002/chem.201501604

2'3-Dimethoxy-2-hydroxy-4'55'-trimethylbiphenylSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1882078: Experimental Crystal Structure Determination

2019

Related Article: Sebastian B. Beil, Peter Franzmann, Timo Müller, Maximilian M. Hielscher, Tobias Prenzel, Dennis Pollok, Nicole Beiser, Dieter Schollmeyer, Siegfried R. Waldvogel|2018|Electrochimica Acta|302|310|doi:10.1016/j.electacta.2019.02.041

23561011-hexamethoxy-8-methylbenzo[e]acephenanthryleneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 681534: Experimental Crystal Structure Determination

2008

Related Article: J.Figueira, J.Rodrigues, L.Russo, K.Rissanen|2008|Acta Crystallogr.,Sect.C:Cryst.Struct.Commun.|64|o33|doi:10.1107/S0108270107065523

25-Diethoxy-14-diethynylbenzeneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 930279: Experimental Crystal Structure Determination

2013

Related Article: Kaisa Helttunen, Lauri Lehtovaara, Hannu Häkkinen, and Maija Nissinen|2013|Cryst.Growth Des.|13|3603|doi:10.1021/cg4005714

2-((2-Nitrophenyl)amino)ethyl 4-methylbenzenesulfonateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1998478: Experimental Crystal Structure Determination

2021

Related Article: Lars J. Wesenberg, Erika Diehl, Till J. B. Zähringer, Carolin Dörr, Dieter Schollmeyer, Akihiro Shimizu, Jun‐ichi Yoshida, Ute A. Hellmich, Siegfried R. Waldvogel|2020|Chem.-Eur.J.|26|17574|doi:10.1002/chem.202003852

2-methoxy-N-(6-methoxy-22-dimethyl-3-oxo-34-dihydro-2H-14-benzoxazin-7-yl)-5-methylbenzene-1-sulfonamideSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1549500: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

2-{[4-(chloroethynyl)phenyl]ethynyl}-13-bis[26-bis(propan-2-yl)phenyl]-45-dihydro-1H-imidazol-3-ium 2-{[4-(bromoethynyl)phenyl]ethynyl}-13-bis[26-bis(propan-2-yl)phenyl]-45-dihydro-1H-imidazol-3-ium tetraphenylborate dichloromethane solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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