课程有“微分几何”,“拓扑学”,“黎曼几何”,“几何分析”
回答: 爱尔兰根纲领 n 维射影几何的群就是 n 维射影空间的对称群(n+1 阶矩阵群,取和标量矩阵的商)。该仿射群是保持所选的无穷远超
由 marketreflections
于 2011-06-27 20:20:39
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