Contents Biographical informatio n Thanks Foreword Chapter 1 . Th e Cauchy-Schwar z inequalit y §L Notes , remarks an d difficul t question s Chapter 2 . Projection s i n M 3 —the elephan t make s appearance! §1. Notes , remark s an d difficul t question s Chapter 3 . Projection s i n four dimension s §1. Notes , remarks, an d difficul t question s Chapter 4 . Projection s an d Cube s §1. Notes , remarks an d difficul t question s Chapter 5 . Incidence s an d matrice s §1. Notes , remark s an d difficul t question s Chapter 6 . Basic s of grids ove r finite fields §1. Notes , remark s an d difficul t question s

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