I really recommend Tim Roughgarden's notes for understanding duality! * L7 (Intro): http://timroughgarden.org/w16/l/l7.pdf http://timroughgarden.org/w16/l/l7.p

I really recommend Tim Roughgarden's notes for understanding duality! * L7 (Intro): http://timroughgarden.org/w16/l/l7.pdf http://timroughgarden.org/w16/l/l7.pdf * L8 (Duality I): http://timroughgarden.org/w16/l/l8.pdf http://timroughgarden.org/w16/l/l8.pdf * L9 (Duality II: http://timroughgarden.org/w16/l/l9.pdf http://timroughgarden.org/w16/l/l9.pdf