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作者:Tao, T; Vargas, A; Vega, L
作者单位:University of California System; University of California Los Angeles; Autonomous University of Madrid; University of Basque Country
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作者:Bowditch, BH
作者单位:University of Southampton
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作者:Huang, XJ
作者单位:Rutgers University System; Rutgers University New Brunswick
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作者:Alexander, H
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作者:Serre, JP
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作者:Borwein, P; Erdelyi, T
作者单位:Texas A&M University System; Texas A&M University College Station
摘要:The principal result of this paper. is a Remez-type inequality for Muntz polynomials: p(x):= (n) Sigma(i=0) aix(lambda i), or equivalently for Dirichlet sums: P(t) := (n) Sigma(i=0) aie(-lambda it), where 0 = lambda(0) < lambda(1) < lambda(2) < .... The most useful form of this inequality states that for every sequence (lambda(i))(infinity)(i=0) satisfying Sigma(i=1)(infinity) 1/lambda(i) < infinity, there is a constant c depending only on Lambda := (lambda(i))(infinity)(i=0) and s (and not on...
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作者:Thaddeus, M
摘要:We study the dependence of geometric invariant theory quotients on the choice of a linearization. We show that, in good cases, two such quotients are related by a flip in the sense of Mori, and explain the relationship with the minimal model program. Moreover, we express the flip as the blow-up and blow-down of specific ideal sheaves, leading, under certain hypotheses, to a quite explicit description of the flip. We apply these ideas to various familiar moduli problems, recovering results of K...
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作者:Zhu, YC
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作者:Pandharipande, R
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作者:Kenig, CE; Ponce, G; Vega, L
作者单位:University of California System; University of California Santa Barbara; University of Basque Country