A D12-symmetric algebraic surface
with 12*11=131 A3-singularities.
It is part of a series of
Di-symmetric surfaces
with many Aj-singularities
(contact
me
for more information on this series).
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All images are created by Oliver Labs using the software surf written by Stephan Endrass and others.
Here is the surf source code of the image above.
Oliver Labs: my homepage: OliverLabs.net, my e-mail: suse TheAtSymbol OliverLabs.net