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:: To be precise about "in this context": It is very common to use "linear" and "affine linear" interchangeably. It is really only in the context of linear algebra (and more generally, module theory) that these terms are strictly distinguished, and in this special case, affine linear is of no interest. In the context where the ___domain is ''not'' an algebraic structure, nominally a group, no one cares. [[Special:Contributions/129.107.225.4|129.107.225.4]] ([[User talk:129.107.225.4|talk]]) 05:39, 19 March 2010 (UTC)
: A definition isn't the same as an example. The example is fine for an intro, but there needs to be a section discussing measure 0 sets or simplicial complexes. What exactly is "piecewise?" From Bing's book it requires a triangulation. I.e., locally finite simplices on which the function is affine linear.[[Special:Contributions/67.255.14.227|67.255.14.227]] ([[User talk:67.255.14.227|talk]]) 04:52, 5 October 2010 (UTC)
== Square wave ==
The square wave is not a function, thus I will be removing it. It fails the vertical-line test, which is when you pass a vertical line through the graph of a function, the line only crosses one point.
Still unsure about the sawtooth function.
--[[User:SaveTheWild|SaveTheWild]] ([[User talk:SaveTheWild|talk]]) 00:39, 12 November 2019 (UTC)
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