Ω LaTeX 符号大全（点击复制命令）LaTeX Symbols List (Click to Copy)
约 230 个常用 LaTeX 数学符号按希腊字母、二元运算、关系符号、箭头、大型运算符、重音、括号、集合逻辑等分组展示，可按命令或中文名称搜索，点击即可复制 \alpha、\leq 这样的命令，并标出需要 amssymb 等宏包的符号。About 230 common LaTeX math symbols grouped into Greek letters, binary operators, relations, arrows, big operators, accents, delimiters, sets and logic — search by command or name, click to copy commands such as \alpha or \leq, with symbols that need amssymb marked.
点击任意符号复制它的 LaTeX 命令。Click a symbol to copy its LaTeX command.
使用说明与常见问题How-to & FAQ
「LaTeX 符号大全（点击复制命令）」是什么？What is the LaTeX Symbols List (Click to Copy)?
约 230 个常用 LaTeX 数学符号按希腊字母、二元运算、关系符号、箭头、大型运算符、重音、括号、集合逻辑等分组展示，可按命令或中文名称搜索，点击即可复制 \alpha、\leq 这样的命令，并标出需要 amssymb 等宏包的符号。About 230 common LaTeX math symbols grouped into Greek letters, binary operators, relations, arrows, big operators, accents, delimiters, sets and logic — search by command or name, click to copy commands such as \alpha or \leq, with symbols that need amssymb marked.
如何使用「LaTeX 符号大全（点击复制命令）」？How do I use the LaTeX Symbols List (Click to Copy)?
在搜索框输入命令（如 leq）、中文名（如 “小于等于”）或直接粘贴符号（如 ≤）快速定位，点击任意符号复制它的 LaTeX 命令。带 “amssymb” 标记的符号需要在导言区加 \usepackage{amssymb}。Search by command (leq), name (less or equal) or paste the symbol (≤), then click a symbol to copy its command. Symbols tagged amssymb need \usepackage{amssymb}.
\le 和 \leq 有区别吗？Is \le different from \leq?
没有区别，两者显示同一个符号 ≤，\le 是简写。同样 \ne 与 \neq 等价。No — both give ≤; \le is shorthand. Likewise \ne equals \neq.
手写符号不知道命令怎么办？I only know what the symbol looks like.
可以把符号本身（如 ∀、⊆）粘贴到搜索框；如果是从 PDF 复制的符号通常也能找到。Paste the symbol itself (∀, ⊆) into the search box; symbols copied from PDFs usually match.
「LaTeX 符号大全（点击复制命令）」免费吗？文件会上传吗？Is the LaTeX Symbols List (Click to Copy) free? Are my files uploaded?
「LaTeX 符号大全（点击复制命令）」完全免费，无需注册。你输入的内容只在本机浏览器里处理（并保存在本机方便下次继续），不会上传到任何服务器，适合处理未发表的论文和数据。The LaTeX Symbols List (Click to Copy) is free with no sign-up. Everything you enter is processed in this browser only (and kept locally so you can continue later); nothing is uploaded, so it is safe for unpublished papers and data.