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arXiv 1201.2897math.AGmath.GT
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实射影超曲面上实直线的抽象

Abundance of real lines on real projective hypersurfaces

S. Finashin, V. Kharlamov

摘要:

证明了一般的2n-1次实射影n维超曲面包含“许多”实直线,即不小于(2n-1)!!,其近似为复数线的数量的平方根。这个估计是基于将线的适当有符号计数解释为适当丛的欧拉数。

英文摘要:

We show that a generic real projective n-dimensional hypersurface of degree 2n-1 contains "many" real lines, namely, not less than (2n-1)!!, which is approximately the square root of the number of complex lines. This estimate is based on the interpretation of a suitable signed count of the lines as the Euler number of an appropriate bundle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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