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Topic: Based on the quadrilateral tree
Replies: 14   Last Post: May 8, 2013 7:00 PM

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kirby urner

Posts: 3,690
Registered: 11/29/05
Re: Based on the quadrilateral tree
Posted: May 7, 2013 3:41 PM
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You can kill two virtual birds with one stone if you introduce the
concepts of version control, a branching tree, forking and so on
(Github) -- geek language -- along with Geometry as an example
of such: a Github-like tree.

Suppose we add a fork to the tree such that our model of 3rd power
growth 1, 8, 27, 64... is a regular tetrahedron of edges N, rather
than a cube. Might we develop in this direction to come up with some
interesting geometry?

It's already been done (more pioneers welcome) and put in the language
of version control, it's not even a threat to say so. Indeed, a
"tree" is a mathematical structure, and it's just as well that we
should see all of mathematics in terms of one (but then it's also a


On Tue, May 7, 2013 at 9:46 AM, Joe Niederberger
<> wrote:
>>The restrictive definition allows its advocates to be certain that an isosceles trapezoid is not a parallelogram.
> *Absolutely* certain.
> It would be nice if these things could be taught in way that lets the students see when things are, for lack of a better term, "conventional", and when they are not.
> This reminds me of the discussion a while back about the conventionality of the area measure of the unit square,
> which, it became clear, is not universally recognized as such.
> Cheers,
> Joe N

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