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Mathematics

High School

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已知$a^2+b≥0，a^2-b≤0$，能推导出$a=0，b=0$吗 2025-7-19 11:58 老司機

Pure Mathematics

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Covering spaces of Klein bottle 2025-7-18 22:11 hbghlyj

Knowledge base

Technology

TeX / LaTeX

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将 LaTeX 宏（\lean, \leanok, \uses）与 Lean 声明关联，再由 plaTeX 渲染到 HTML 2025-6-26 17:42 hbghlyj

Mathematica

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给一个小数值，能否找到最接近于它的$a+b\sqrt{c}$的有理数$a,b,c$ 2025-6-23 09:03 hbghlyj

Programming

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撰写 Lean 证明脚本 2025-7-14 16:43 hbghlyj

General Topics

Applied Mathematics

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两文件逐字节比较判断是否相同耗时多? 2025-7-10 16:04 大白兔奶糖

Site Support

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用方向键将光标移动到公式内，就能修改公式 2025-7-18 20:53 hbghlyj

Casual Talk

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使用拉普拉斯算子检测图像的边缘 2025-6-30 15:24 hbghlyj

Sandbox

Formatting Test

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如果想对一段内容着重强调，应该怎么弄比较好呢？ 2025-5-16 23:56 kuing

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