“…Algebraic geometers call this line arrangement the complete quadrilateral. In [23] Hirzebruch gives a non-technical description of the algebraic surface corresponding to one of these lattices; see also [24] or [6]. An explicit relation between Hirzebruch's construction and Mostow's construction is given by Yamazaki and Yoshida [67].…”
Section: Fundamental Domainsmentioning
confidence: 99%
“…The first explicit examples of complex hyperbolic lattices arising from this construction are due to Livné [35]. Subsequently, more examples were given by Hirzebruch [24] and [25] and Shvartsman [60]; see also the survey [23] and the book [6]. The connections between the constructions of Livné and Hirzebruch is discussed in [30].…”
Abstract. The purpose of this paper is twofold. First, we give a survey of the known methods of constructing lattices in complex hyperbolic space. Secondly, we discuss some of the lattices constructed by Deligne and Mostow and by Thurston in detail. In particular, we give a unified treatment of the constructions of fundamental domains and we relate this to other properties of these lattices.
“…Algebraic geometers call this line arrangement the complete quadrilateral. In [23] Hirzebruch gives a non-technical description of the algebraic surface corresponding to one of these lattices; see also [24] or [6]. An explicit relation between Hirzebruch's construction and Mostow's construction is given by Yamazaki and Yoshida [67].…”
Section: Fundamental Domainsmentioning
confidence: 99%
“…The first explicit examples of complex hyperbolic lattices arising from this construction are due to Livné [35]. Subsequently, more examples were given by Hirzebruch [24] and [25] and Shvartsman [60]; see also the survey [23] and the book [6]. The connections between the constructions of Livné and Hirzebruch is discussed in [30].…”
Abstract. The purpose of this paper is twofold. First, we give a survey of the known methods of constructing lattices in complex hyperbolic space. Secondly, we discuss some of the lattices constructed by Deligne and Mostow and by Thurston in detail. In particular, we give a unified treatment of the constructions of fundamental domains and we relate this to other properties of these lattices.
“…It is known to fail in positive characteristic, see e.g. [Sz,Section 3.4.1] or [BHH,Kapitel 3.4.J]. Over the complex numbers, χ = 1 is the lowest value possible for a surface of general type.…”
ABSTRACT. We give a systematic construction of uniruled surfaces in positive characteristic. Using this construction, we find surfaces of general type with non-trivial global vector fields, surfaces with arbitrarily non-reduced Picard schemes as well as surfaces with inseparable canonical maps. In particular, we show that some previously known pathologies are not sporadic but exist in abundance.
CONTENTS
“…Отметим также, что предложение 5.2 дает оценку снизу на \e(F) -11 для всех компонент F вещественной части максимальной вещественной поверхности Мияо ки-Яо X, в то время как более традиционные результаты дают оценки сверху на |е(Хк) -1|, где Х^ -множество всех вещественных точек многообразия X (см., например, обзор [3] 5.4. Поверхности Мияоки-Яо являются квазипростыми в следующем смысле: две вещественные структуры на этих поверхностях сопряжены с помощью авто морфизма тогда и только тогда, когда они сопряжены с помощью некоторого диф феоморфизма 2 . Это утверждение следует из сильной жесткости Мостова и из того, что изометрия компактного гиперболического риманова многообразия, действую щая тождественно на фундаментальной группе, является тождественным отобра жением.…”
Section: лемма 42 пусть H E к1(хз) тогда H оставляет на месте множunclassified
“…Пересечение трех различных прямых Z^, Lj, L& не пусто тогда и только тогда, когда (г, j, к) еТ, где Г = {(1,2,3), (4,5,6), (7,8,9), (1,4, 7), (2,5,8), (3, б, 9), (1,5,9), (3,5,7), (1,6,8), (3,4,8), (2,4,9), (2,6, 7)}.…”
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