Convention:Function composition: Difference between revisions

Revision as of 17:56, 12 January 2008

This article is about a convention that is followed in this wiki. The aim is that every page on the wiki follows this convention unless explicitly stated otherwise on the page; however, in practice, this may not have been implemented
Also see switching between the left and right action conventions for background on the differences between various conventions.

In Groupprops, the notation $f \circ g$ always denotes $g$ , followed by $f$ . In other words, if $g : A \to B$ , and $f : B \to C$ are maps, then $f \circ g$ denotes the composite map from $A$ to $C$ .

This convention for function composition also explains the corresponding convention for group action.

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 In Groupprops, the notation <math>f \circ g</math> always denotes <math>g</math>, followed by <math>f</math>. In other words, if <math>g:A \to B</math>, and <math>f:B \to C</math> are maps, then <math>f \circ g</math> denotes the composite map from <math>A</math> to <math>C</math>.
 This convention for function composition also explains the corresponding [[Convention:Group action on left|convention for group action]].