2014年4月6日 · I am currently using $$\phi(\varepsilon) \overrightarrow{ \varepsilon \rightarrow 0 }0 $$ for writing down mathematical limits.

To me this is the simplest and most flexible solution, and renders nicely too (sure, it does not look like the right arrow in math mode but for many purposes it might be enough). You can control spacing very easily inside the verbatim. For instance, more spacing would be A \verb| -> | B. Both are shown below.

2015年8月16日 · However, $\xrightarrow{dim}$ puts the arrow in the centre (as one would have for a map) which makes the dim small and doesn't look good. So is there an arrow which works like a $\widehat{dim}$ but with an arrow instead of a hat? P.S. The text I'm using just uses an underline but I feel it isn't noticeable enough.

2016年4月20日 · the notation $\mapsto$ ("maps to", an arrow with a bar at its tail) ... There is another arrow-symbol, which also used for mapping $\rightarrow$, which might be a bit confusing. The difference between two (as it is mentioned in the linked answer, as well as in the answer by MathEnthusiast):

Long Dashed Right Arrow. Ask Question Asked 11 years, 1 month ago. Modified 5 years, 9 months ago.

I'm doing Project Euler Question 14 and would like to know what the right arrow → means in: n → n/2 (n is even) n → 3n + 1 (n is odd) I gather from the phrasing of the question that it has to do with set theory. Any links to primers on set theory that would help me to understand the question greatly appreciated. Thanks.

2016年4月13日 · Difference of mapsto and right arrow (3 answers) Closed 8 years ago. Can someone explain the difference ...

2012年8月8日 · I would like to know what is the best way to do an inclusion arrow, using xy or tikz. I know that there is a command for an arrow, like \\to, for inclusions, but this is not expansible. What do yo...

2017年6月26日 · There is no difference in the meaning. I learned math in France, where the only symbol used for implication is $\small \Longrightarrow$, and the single line arrow is used for a limit, or a mapping, etc. See this higher math textbook extract. $\endgroup$ –

What does the $\Rightarrow$ arrow mean when ... then so is the function on the right hand side of the ...