二级无穷小邻域
second order infinitesimal neighborhood
发散无穷级数
divergent infinite series
无穷级Dirichlet级数
infinite order Dirichlet series
无穷级目录
infinite grade of catalogue
无穷级数的余项
remainder of an infinite series
无穷级数论
theory of infinite series
AImLJnG无穷不等式链
AImLJnG unbounded inequality chains
Fermat无穷递降法
Fermat infinite method of descent
Lie无穷小判据
Lie’s infinitesimal criterion
n元无穷小生成元
n-ary infinite semi generator