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Closed form of the sum $\sum_{n=1}^\infty q^{-n^2} z^n$ for $|z|<1$ New hbghlyj 2025-6-2 22:02 01151 hbghlyj 2025-6-2 22:02
[代数/数论] 四次Pell方程的一类参数特解 New 青青子衿 2025-5-31 18:07 13374 青青子衿 2025-6-1 10:21
[几何/拓扑] ∄ closed minimal surface in $\Bbb R^3$ New hbghlyj 2025-6-1 05:36 0508 hbghlyj 2025-6-1 05:36
numerical integration formula, determine the parameter α to maximize precision New hbghlyj 2025-5-29 23:20 01824 hbghlyj 2025-5-29 23:20
[几何/拓扑] if two representations have the same character, they are isomorphic New hbghlyj 2025-5-28 23:51 11730 hbghlyj 2025-5-28 23:53
一个涉及下降阶乘和移位算子的算子乘积的展开式 New hbghlyj 2025-5-28 18:38 0376 hbghlyj 2025-5-28 18:38
两个难题积分 New ABCD001 2025-5-28 11:32 0554 ABCD001 2025-5-28 11:32
[几何/拓扑] left-invariant vector fields commute with right-invariant vector fields hbghlyj 2025-5-27 04:20 01244 hbghlyj 2025-5-27 18:03
[分析/方程] 积分不等式 血狼王 2016-3-22 23:58 03279 血狼王 2025-5-25 20:15
[代数/数论] How many natural cotransformations are there between F and G? hbghlyj 2025-5-24 04:19 02738 hbghlyj 2025-5-24 04:19
$\sum_{n=1}^\infty \frac{n^n}{e^nn!}$发散 hbghlyj 2023-8-8 09:53 23199 hbghlyj 2025-5-24 01:56
[代数/数论] 三次代数整数与行列式 青青子衿 2023-1-19 18:55 57381 青青子衿 2025-5-22 07:54
[几何/拓扑] Curvature and Fundamental Groups hbghlyj 2025-5-22 03:53 12287 hbghlyj 2025-5-22 04:06
[几何/拓扑] Jacobi fields, conjugate locus in hyperbolic plane hbghlyj 2025-5-21 05:48 11413 hbghlyj 2025-5-21 08:52
[几何/拓扑] Product of metrics of constant sectional curvature hbghlyj 2025-5-21 03:33 11078 hbghlyj 2025-5-21 03:41
[几何/拓扑] 仿射簇的乘積的拓樸不是它們的Zariski拓樸的乘積拓樸 hbghlyj 2025-5-19 19:12 12580 hbghlyj 2025-5-19 19:21
[概率/统计] 用蒙特卡洛法求积分 opuikl_0 2017-6-30 21:53 01742 opuikl_0 2025-5-19 15:12
后两类椭圆积分的加法 青青子衿 2025-3-23 11:40 46954 青青子衿 2025-5-19 05:27
[概率/统计] SDE 有无解判断 opuikl_0 2017-4-19 15:21 13230 hbghlyj 2025-5-19 04:59
$1/\sqrt[3]{x^3-3 x^2-3 x-1}$不定积分 hbghlyj 2024-12-19 06:42 45918 青青子衿 2025-5-18 14:51
有点简单的积分 ABCD001 2025-5-18 13:53 12067 ABCD001 2025-5-18 14:25
含三角函数的几个极限 dim 2016-4-13 12:34 01714 dim 2025-5-17 19:04
多项式倒数 求和 hbghlyj 2023-8-13 21:18 92584 hbghlyj 2025-5-1 01:05
定积分等式 Aluminiumor 2025-4-29 19:50 0502 Aluminiumor 2025-4-29 19:50
[分析/方程] 关于Frobenius method中级数收敛性和混合偏导数可交换性的问题 ccmxigua1 2025-4-16 15:11 2257 ccmxigua1 2025-4-17 11:00
[代数/数论] 同调代数 hbghlyj 2025-4-14 00:24 2214 hbghlyj 2025-4-14 03:15
[代数/数论] 交换代数 hbghlyj 2025-4-14 01:35 2198 hbghlyj 2025-4-14 03:06
椭圆积分的勒让德正规化 青青子衿 2024-4-18 04:33 13451 青青子衿 2025-4-12 23:30
[几何/拓扑] 是否存在一个连续映射$f$，使得$f(U)$不是$f(x)$的邻域？ abababa 2025-4-10 19:45 2210 abababa 2025-4-10 20:32
刘维尔定理 (微分代数) hbghlyj 2022-3-26 22:45 3427 hbghlyj 2025-4-10 09:43
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