Number 9: The Search for the Sigma Code Number 9 is an enthralling mystery and a study of the intriguing world of numbers at the same time. In solving the riddle, Enjil, a boy mathematician, leads us deeper and deeper into an inner world. Diagrams and picture maps which illustrate the book show how the number nine holds the fate of other numbers, how, like a phantom, it can change and vanish, or like a virus, attack and conquer the character of other numbers. Ultimately nine is seen not just as a number but as a beginning and end, a metaphor for the closed and secretive or the open and inquisitive. Enjil is not just another person, but an animation of our restless spirit, looking for a meaning.

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