Yet another minimal surface  this one was pretty easy, but it's a nice example of a saddle point built from Lego. Only standard (1xn and 2xn) bricks were used.
As with most of my mathematical surfaces, I made use of some computer assistance. Just in case anyone's interested, here's the raw LDRAW .DAT file generated by my program for this sculpture. Beware  the .DAT file builds it out of 1x1 bricks. Actually constructing this out of larger bricks so that it holds together is a (nontrivial) exercise for the reader!
This model shows (most of) one cell of a doublyperiodic Scherk surface. Actually Scherk discovered more than one minimal surface in 1835, but this one has the particularly simple parametrisation given by exp(z) = cos(x)/cos(y). This model shows the surface in the region x, y < p/2  0.01.
Here are some links to pages related to the Scherk surface:
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