Exts和Vertex运算符
Exts and Vertex Operators
摘要：
同一曲面的两个希尔伯特格式的直积具有自然的K-理论类，由两个理想层之间的交替Ext群给出，由线丛扭曲。我们表示这些虚拟丛的陈类Nakajima运营商。
英文摘要：
The direct product of two Hilbert schemes of the same surface has natural K-theory classes given by the alternating Ext groups between the two ideal sheaves in question, twisted by a line bundle. We express the Chern classes of these virtual bundles in terms of Nakajima operators.
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。
