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  _____      ___     __   __     ___      ______  
 / ____||   / _ \\   \ \\/ //   / _ \\   /_   _// 
/ //---`'  | / \ ||   \   //   / //\ \\    | ||   
\ \\___    | \_/ ||   / . \\  |  ___  ||  _| ||   
 \_____||   \___//   /_//\_\\ |_||  |_|| /__//    
  `----`    `---`    `-`  --` `-`   `-`  `--`

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Text this: Enumerative invariants in algebraic geometry and string theory : lectures given at the C.I.M.E. Summer School held in Cetraro, Italy, June 6-11, 2005