1,125 research outputs found

    Standard isotrivial fibrations with p(g) = q=1, II

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    A smooth, projective surface S is called a standard isotrivial fibration if there exists a finite group G which acts faithfully on two smooth projective curves C and F so that S is isomorphic to the minimal desingularization of T := (C × F )/G. Standard isotrivial fibrations of general type with pg = q = 1 have been classified in [F. Polizzi, Standard isotrivial fibrations with pg = q = 1, J. Algebra 321 (2009),1600–1631] under the assumption that T has only Rational Double Points as singularities. In the present paper we extend this result, classifying all cases where S is a minimal model. As a by-product, we provide the first examples of minimal surfaces of general type with pg = q = 1, K^2 = 5 and Albanese fibration of genus 3. Finally, we show with explicit examples that the case where S is not minimal actually occurs

    Tourism and Communication on the Internet: the Case of Italian Wine and Food Roads Web Site quality

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    Il lavoro analizza i fattori della comunicazione web dei siti internet delle strade del vino italiane e ne propone un indicatore sintetico di valutazione. Da questo e dall'analisi delle sue dimensioni componenti si ricavano utili informazioni per il marketing della comunicazione

    The classification of surfaces of general type with p_g=q=1 isogenous to a product of curves

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    A smooth, projective surface S is said to be isogenous to a product if there exist two smooth curves C, F and a finite group G acting freely on C x F so that S = (C x F)/G. In this paper we classify all surfaces with p(g) = q = 1 which are isogenous to a product
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