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説明
<jats:p> In this paper we show the lower bound of the set of non-zero -K<jats:sup>2</jats:sup> for normal surface singularities establishing that this set has no accumulation points from above. We also prove that every accumulation point from below is a rational number and every positive integer is an accumulation point. Every rational number can be an accumulation point modulo ℤ. We determine all accumulation points in [0, 1]. If we fix the value -K<jats:sup>2</jats:sup>, then the values of p<jats:sub>g</jats:sub>, p<jats:sub>a</jats:sub>, mult, embdim and the numerical indices are bounded, while the numbers of the exceptional curves are not bounded. </jats:p>
収録刊行物
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- International Journal of Mathematics
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International Journal of Mathematics 09 653-668, 1998-09-01
World Scientific Pub Co Pte Lt