The book is a collection of papers written by a selection of eminent authors from around the world in honour of Gregory Chaitin’s 60th birthday. This is a unique volume including technical contributions, philosophical papers and essays.

Contents:

• On Random and Hard-to-Describe Numbers (C H Bennett)
• The Implications of a Cosmological Information Bound for Complexity, Quantum Information and the Nature of Physical Law (P C W Davies)
• What is a Computation? (M Davis)
• A Berry-Type Paradox (G Lolli)
• The Secret Number. An Exposition of Chaitin’s Theory (G Rozenberg & A Salomaa)
• Omega and the Time Evolution of the n-Body Problem (K Svozil)
• God's Number: Where Can We Find the Secret of the Universe? In a Single Number! (M Chown)
• Omega Numbers (J-P Delahaye)
• Some Modern Perspectives on the Quest for Ultimate Knowledge (S Wolfram)
• An Enquiry Concerning Human (and Computer!) [Mathematical] Understanding (D Zeilberger)
• and other papers