希腊字母epsilon的两种写法ϵ，ε，一般认为哪个是原型，哪个是变体？ 我一直以为前者是原型，因为TeX中两者分别记为\epsilon，\varepsilon 但在Microsoft Word的数学公式输入器中却将两者 …

This letter "$\\varepsilon$" is called epsilon right ? What does it signify in mathematics ?

I find the presentation of the $\epsilon$-$\delta$ definition as a game tends to help beginning students: the players are Paul the prover, and Alice the adversary.

Dec 24, 2010 · What does the $\\ni$ (backwards element of) symbol mean? It doesn't appear in the Wikipedia list of mathematical symbols, and a Google search for "backwards element of" …

Jun 21, 2018 · The epsilon algebra is a simple method compared to the more advanced interval arithmetic which can be used to put bounds on rounding and measurement errors in …

Nov 3, 2016 · I'm adding a small number $\\epsilon$ to a denominator for numerical stability. Is it correct to introduce it as $\\epsilon \\ll 1$? In fact, it should be close to zero, not just (much) …

Sep 25, 2024 · $$\frac {16} {n^2+2}=\epsilon$$ but this would be overkill, a lower bound is enough and usually easier. You also have to check that the inequality also holds for larger values of $n$.

Nov 18, 2021 · I'm really doing my best but completely failing to understand the epsilon-delta definition of a limit. I vaguely understand it like this: Given a bound on the difference between …

Aug 20, 2017 · I've read that $\epsilon_0$ is a fixed point on an exponential map, and (what I think amounts to the same thing) that $\epsilon=\omega^\epsilon$.

Apr 30, 2014 · Your comment "we need to use $\delta$ to get $\epsilon$" is absolutely correct! I am glad you are beginning to see the importance of $\delta$. The main idea is to be able to …