This directory will soon contain supplemental files to "Surfaces and hypersurfaces as the joint spectrum of matrices" by DeBonis, Loring and Sverdlov. Here is the listing of the files that should be in this directory. These are all Mathematica files, PDF printouts of the Mathematica files, or somewhat compress versions of the videos produced by some to the Mathematica files. The *.mov files are not as high quality as the *.avi files. 2.6M C5scale_cmprsd.avi 1.6M C5scale_cmprsd.mov 42M ClassAIIsphere.nb 342K ClassAIIsphere.pdf 13M ClassAIIspherePfaff.nb 345K ClassAIIspherePfaff.pdf 9.2M Even_odd_4A.nb 327K Even_odd_4A.pdf 57K Even_odd_4C.nb 34K Even_odd_4C.pdf 4.4M F5scale_cmprsd.avi 1.2M F5scale_cmprsd.mov 5.7M FSscaled5Croped.nb 200K FSscaled5Croped.pdf 62K GammaMatrices_4A.nb 45K GammaMatrices_4A.pdf 31K GammaMatrices_4B.nb 29K GammaMatrices_4B.pdf 1.7M Lemniscate.nb 206K Lemniscate.pdf 2.2M lowering_genus_cmprsd.avi 462K lowering_genus_cmprsd.mov 5.1M PauliSpinTwoSphere.nb 400K PauliSpinTwoSphere.pdf 2.1M torus_4_n3.nb 462K torus_4_n3.pdf 3.8M torus_4_n4.nb 726K torus_4_n4.pdf 2.5M torus_4_n5.nb 556K torus_4_n5.pdf 1.9M torus_4_n6.nb 619K torus_4_n6.pdf 6.7M Torus5_10steps.nb 686K Torus5_10steps.pdf 4.6M two_holes_6_index.nb 599K two_holes_6_index.pdf 31M two_holes.nb 1.3M two_holes.pdf