用户讨论:Zhangyunfan

逻辑符号

• Zhangyunfan, 行文(即公式外) 太多符号令您的文难读. 例如,可简单改 " $\exists A$ " 为"存在 A", 等. 谢!---Hillgentleman 12:40 2006年10月25日 (UTC)

引文: "若$\exists A\in R$使得数列{$\left.x_{n}\right.$}恒满足$x_{n}\geq A$，则称数列{$\left.x_{n}\right.$}有下界；若$\exists B\in R$使得数列{$\left.x_{n}\right.$}恒满足$x_{n}\leq B$，则称数列{$\left.x_{n}\right.$}有上界；若$\exists A\in R$且$\exists B\in R$使得数列{$\left.x_{n}\right.$}恒满足$B\geq x_{n}\geq A$，则称数列{$\left.x_{n}\right.$}有界。"

• "A person editing a mathematics article should not fall into temptation that "this formula says it all". A non-mathematical reader will skip the formulas in most cases, and often a mathematician reading outside his research area will do the same. Careful thought should be given to each formula included, and words should be used instead if possible. In particular, the English words "for all", "exists", and "in" should be preferred to the ∀, ∃, and ∈ symbols." ------- en:w:Wikipedia:Manual of Style (mathematics)#Suggested structure of a mathematics article, section Article body.--------Hillgentleman 12:47 2006年10月25日 (UTC)

我的浏览器字体大小

我的浏览器字体大小用 Ctrl+ / Ctrl- 随意控制.谢!--Hillgentleman 18:47 2006年10月25日 (UTC)

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