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Higher math Today: 0|Threads: 986|Rank: 6 

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2 lemmas about Cayley's Group Theorem hbghlyj 2022-6-11 1114 Czhang271828 2022-8-6 22:44
证明函数的唯一性 harryzzy 2022-8-2 20233 harryzzy 2022-8-3 19:24
设$T$是自共轭算子,求证$\inf_{\|x\|=1}\langle Tx,x\rangle\in\sigma(T)$ abababa 2022-7-30 398 abababa 2022-8-2 19:39
伽玛函数的积分定义、在半整数的值$Γ(n/2)$ hbghlyj 2022-6-26 2179 Czhang271828 2022-7-29 14:13
延拓 Lipschitz 函数至全空间 Czhang271828 2022-7-22 0103 Czhang271828 2022-7-22 17:51
证明稠密性 hbghlyj 2022-7-18 8192 Czhang271828 2022-7-22 16:24
求证存在$\{G_{\alpha}\}$的一个可数子集也能覆盖$X$。 abababa 2022-7-15 4112 abababa 2022-7-22 16:14
递推数列 极限 hbghlyj 2022-3-17 4174 Czhang271828 2022-7-22 15:56
闭子空间直和仍闭,要求$H$完备吗? abababa 2022-4-20 4190 abababa 2022-7-18 20:04
举例矩阵在$ℂ$和$\Bbb F_5$可对角化,但在$ℝ$上不可 hbghlyj 2022-7-8 3131 hbghlyj 2022-7-12 22:45
λ has multiplicity 1 ⇒ rank(A-λI)=n-1, but not necessarily conversely hbghlyj 2022-7-9 0174 hbghlyj 2022-7-9 05:44
矩阵的特征值 hbghlyj 2022-7-9 1207 hbghlyj 2022-7-9 05:06
整数划分 特征值的初等对称多项式 hbghlyj 2022-4-1 2399 hbghlyj 2022-7-8 23:39
If a linear operator $T$ has minimal, characteristic polynomial $q^k$ for $q$... hbghlyj 2022-7-8 098 hbghlyj 2022-7-8 18:59
MATLAB解二元方程组 uhcu 2022-7-6 1124 hbghlyj 2022-7-7 16:46
$\lim_{n \to \infty}\sqrt[n]{n^k}$ isee 2022-7-3 1129 kuing 2022-7-3 22:47
级数与积分 hbghlyj 2022-3-2 3226 战巡 2022-7-3 13:10
Riemann zeta function hbghlyj 2022-6-29 1113 hbghlyj 2022-6-29 00:53
二项式系数的幂和的渐近表达式 hbghlyj 2022-6-28 0136 hbghlyj 2022-6-28 17:45
矩阵求导 hbghlyj 2022-6-27 0129 hbghlyj 2022-6-27 22:38
f平方可积,$g(t)=\int e^{-(t-x)}f(x)dx$,能否得到g也平方可积 abababa 2022-5-31 9200 abababa 2022-6-27 21:04
拉普拉斯方法 hbghlyj 2022-6-26 4125 hbghlyj 2022-6-26 18:40
求两个空间圆之间的正交变换 青青子衿 2022-6-26 0131 青青子衿 2022-6-26 00:07
Laplace's equation, Robin Boundary Problem hbghlyj 2022-6-24 1146 hbghlyj 2022-6-24 03:57
SVD分解 存在性证明 hbghlyj 2022-6-23 4108 hbghlyj 2022-6-23 15:46
When the Identity Theorem “Seems” to Fail hbghlyj 2022-6-21 1107 hbghlyj 2022-6-21 06:42
微积分与数学分析学习帖  ...2 zhcosin 2017-6-15 315588 hbghlyj 2022-6-19 22:24
meridian on a surface of revolution is a curve of shortest length hbghlyj 2022-6-9 4184 hbghlyj 2022-6-17 13:08
graph of nonlinear solution of Cauchy's functional equation is dense in $ℝ^2$ hbghlyj 2022-6-16 0105 hbghlyj 2022-6-16 08:06
自同构群为交换群的有限群是循环群 hbghlyj 2022-6-15 0112 hbghlyj 2022-6-15 16:44
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