View PDF Handout (Part 1) https://client.blueskybroadcast.com/SIAM12/AM/pdf/Pottmann_IC7_7-12-12_8-30am_part1.pdf View PDF Handout (Part 2) https://client.blueskybroadcast.com/SIAM12/AM/pdf/Pottmann_IC7_7-12-12_8-30am_part2.pdf