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Add very long arrows to the math mode
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Description

Add TeX command \xlongrightarrow and its relatives (\xlongleftarrow and so on); these are really long arrows

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what means and so on?

A workaround is to use \xrightarrow{\quad} with various spacing in the brackets

0\, \xrightarrow{f}\, A\, \xrightarrow{\ g\ }\, B\, \xrightarrow{\;\;h\;\;}\, C\, \xrightarrow{\quad i\quad}\, D\, \xrightarrow{\quad}\, 0

Example at https://en.wikibooks.org/wiki/User:Mathmensch/Playground

There are some exotic arrows used in https://en.wikipedia.org/wiki/Exact_sequence#Properties

\hookrightarrow and \twoheadrightarrow

it would be quite nice to have long versions of these.

Physikerwelt removed Physikerwelt as the assignee of this task.Dec 2 2018, 5:28 PM
Pkra moved this task from Incoming to New TeX macro proposals on the Math board.Dec 7 2018, 11:16 AM