127,353 research outputs found

    On the arithmetic of del Pezzo surfaces of degree 2

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    We study the arithmetic of certain del Pezzo surfaces of degree 2. We produce examples of Brauer-Manin obstruction to the Hasse principle, coming from 2- and 4-torsion elements in the Brauer group

    Arminio par Hasse

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    Titre uniforme : Hasse, Johann Adolf (1699-1783). Compositeur. [Arminio]Opera seria en 3 actes. - Livret de Giovanni Claudio Pasquini d'après Antonio Salvi. - 1re représentation de cette version : Dresde, Hoftheater, 8 janvier 1753 (1re version : Dresde, Hoftheater, 7 octobre 1745). - 2e version de l'opéra d'après R. Strohm (Pipers Enzyklopädie, II, p. 719). - Rôles : Segeste (Ut 4), Segimiro (Ut 1), Tusnelda (Ut 1), Marzia (Ut 1), Varo (Ut 1), Tullo (Fa 4), Arminio (Ut 1). - Vl 4, vla 2, fl 2, ob 2, cor 2, b. - Pagination ajoutée. - Filigrane : détail de fleur de lysPrésentation musicale : [Partition]Incipit : Solcar pensa un mar sicuroAppartient à l’ensemble documentaire : RISM2Appartient à l’ensemble documentaire : RISMMssOpéras -- +* 1700......- 1799......+:18e siècle

    Arminio par Hasse

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    Titre uniforme : Hasse, Johann Adolf (1699-1783). Compositeur. [Arminio]Opera seria en 3 actes. - Livret de Giovanni Claudio Pasquini d'après Antonio Salvi. - 1re représentation de cette version : Dresde, Hoftheater, 8 janvier 1753 (1re version : Dresde, Hoftheater, 7 octobre 1745). - 2e version de l'opéra d'après R. Strohm (Pipers Enzyklopädie, II, p. 719). - Rôles : Segeste (Ut 4), Segimiro (Ut 1), Tusnelda (Ut 1), Marzia (Ut 1), Varo (Ut 1), Tullo (Fa 4), Arminio (Ut 1). - Vl 4, vla 2, fl 2, ob 2, cor 2, b. - Pagination ajoutée. - Filigrane : détail de fleur de lysPrésentation musicale : [Partition]Incipit : Solcar pensa un mar sicuroAppartient à l’ensemble documentaire : RISM2Appartient à l’ensemble documentaire : RISMMssOpéras -- +* 1700......- 1799......+:18e siècle

    Arminio par Hasse

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    Titre uniforme : Hasse, Johann Adolf (1699-1783). Compositeur. [Arminio]Opera seria en 3 actes. - Livret de Giovanni Claudio Pasquini d'après Antonio Salvi. - 1re représentation de cette version : Dresde, Hoftheater, 8 janvier 1753 (1re version : Dresde, Hoftheater, 7 octobre 1745). - 2e version de l'opéra d'après R. Strohm (Pipers Enzyklopädie, II, p. 719). - Rôles : Segeste (Ut 4), Segimiro (Ut 1), Tusnelda (Ut 1), Marzia (Ut 1), Varo (Ut 1), Tullo (Fa 4), Arminio (Ut 1). - Vl 4, vla 2, fl 2, ob 2, cor 2, b. - Pagination ajoutée. - Filigrane : détail de fleur de lysPrésentation musicale : [Partition]Incipit : Solcar pensa un mar sicuroAppartient à l’ensemble documentaire : RISM2Appartient à l’ensemble documentaire : RISMMssOpéras -- +* 1700......- 1799......+:18e siècle

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    The Hasse norm theorem mod squares

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    AbstractFor a Galois extension KF of global fields, char F≠2, it is known that the Hasse norm theorem mod squares is equivalent to the existence of a local-global principle for the transfer ideal JK/F of quadratic forms. When Gal(K/F)=(Z/2Z)k, the Hasse norm theorem mod squares holds although the usual Hasse norm theorem may fail. In this paper we analyze the case when Gal(K/F)=Z/2Z⊕Z/2kZ, k≥2. In particular, the Hasse norm theorem mod squares holds if and only if the Hasse norm theorem holds (Theorem I). A corollary shows that if a square in F is a local norm from K, then it is a global norm from K (Theorem II)

    L'Asilio d'amore // Musica // Del Sig.r Giovanni Adolfo Hasse d.o il Sassone // Atto Unico

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    Titre uniforme : Hasse, Johann Adolf (1699-1783). Compositeur. [L'asilio d'amore]Festa teatrale en 1 acte. - Livret de Pietro Metastasio. - 1re représentation : Dresde, Hubertusburg, 7 octobre 1743. - Rôles : Venere (Ut 1), Amore (Ut 1), Mercurio (Ut 1 ), Pallade (Ut 3), Apollo (Ut 1), Marte (Ut 4), Proteo (Ut 3). - Choeur (Ut 1, Ut 3, Ut 4, Fa 4). - Vl 2, vla, ob 2, cor 2, b. - Sur la page de titre, après le nom du compositeur : "Proprietà della litografia Patrelli // Vol: 85". - Sur la page de garde, filigranes représentant un mouton, surmontant les initiales LDAPrésentation musicale : [Partition]Incipit : Vorrei di te fidarmiAppartient à l’ensemble documentaire : RISM2Appartient à l’ensemble documentaire : RISMMssOpéras -- +* 1700......- 1799......+:18e siècle

    Concertos - Mus. Hs. 189 : fl, vl (2), vla, b; G; GroF 184 GroF 737

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    Johann Adolf HasseWeiterer zitierter Komponist: Baldassare Galuppi. - Quelle: manuscript. - Mit Zuschreibung an Galuppi in S-Skma überliefert, siehe GroF. - Auf dem Titelblatt der b-Stimme oben (Hand Molters): "N|r|o 31" (Verweis auf MolterM). - daneben (moderne Hand, in Blei, durchgestrichen): "90"[title page, b:] CONCERTO Ex G: | a. 5 | Flauto Traverso | Violino Primo | Violino Secondo | Viola | et | Basso | Del: Sige: Hasse | J: Reüsch | [incipit: vl 1 and b

    Concertos - Mus. Hs. 188 : fl, vl (2), b; D; GroF 736

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    Johann Adolf HasseQuelle: manuscript. - Auf dem Titelblatt der fl-Stimme oben (Hand Molters): "N|r|o 32" (Verweis auf MolterM). - daneben (moderne Hand, in Blei, durchgestrichen): "90". - Komponistenname in den Stimmen "Hasse"[title page, fl:] CONCERTO | Flauto Traverso | Violino Primo | Violino Secondo | et | Basso | Del: Singe Hasso[!] | J: Reusch | [incipit: fl and b
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