Where Did the Hierarchy of Mathematics Diagram Originate?

[Simfish]

Does anyone know where http://space.mit.edu/home/tegmark/toe_cut.gif came from?

 

[Office_Shredder]

There are some serious errors on the left side of that picture.

Also the full picture is further down on the same page as the cut off one/. here's the paper on arxiv that it's in
http://arxiv.org/PS_cache/gr-qc/pdf/9704/9704009v2.pdf

 

[Simfish]

Oh okay I see. Thanks!

 

[LenR]

Does anyone know where http://space.mit.edu/home/tegmark/toe_cut.gif came from?

I find the complete, high-res version of this in the paper (PDF), "Is 'the theory of everything' merely the ultimate ensemble theory?" by Max Tegmark.