Titlebook: Algebraic Threefolds; With Special Regard Leonard Roth Book 1955 Springer-Verlag Berlin Heidelberg 1955 Equivalence.Invariant.Threefolds.a

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Stefan Alexander König,Uwe Spetzgerxtension of the analogous theory for surfaces, and presents no new features; it will, however, be convenient to recall here a useful criterion for the equivalence of surfaces on a threefold, due to . [5]:

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Perkutane transluminale Angioplastie (PTA)n-singular three fold .. If . is such a surface, with virtual characters ., we define the . of the system |.| by the formula . - .. + 2, where .. denotes the arithmetic genus of .. In the case where . is non-special, with effective freedom ., we say that |.| is .. It is known that there exist regula

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https://doi.org/10.1007/978-3-642-77364-8 field of rationality of whose coefficients we shall denote by .. If, while remaining in ., we can find a rational parametric representation for .., we shall say that .. is .; we thereby obtain a mapping in . of .. on an involution .. of .., of a certain order . ≧1. If, in particular, . = 1, it is p

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Ergebnisse der Mathematik und ihrer Grenzgebiete. 2. Folgehttp://image.papertrans.cn/a/image/152719.jpg

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Systems of Equivalence,xtension of the analogous theory for surfaces, and presents no new features; it will, however, be convenient to recall here a useful criterion for the equivalence of surfaces on a threefold, due to . [5]:

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Systems of Surfaces,n-singular three fold .. If . is such a surface, with virtual characters ., we define the . of the system |.| by the formula . - .. + 2, where .. denotes the arithmetic genus of .. In the case where . is non-special, with effective freedom ., we say that |.| is .. It is known that there exist regula

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