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Wallis - najnowsze książki: Magic Graphs, How Safe Are Our Skies,
5 osób chce przeczytać książki autora
Wallis - najnowsze książki: Magic Graphs, How Safe Are Our Skies,
5 osób chce przeczytać książki autora
Wallis - twórczość
Magic Graphs
Magic squares, their origins lost in antiquity, are among the more popular mathematical recreations. Over the years a number of generalizations have been proposed, going back in the last century to Sedl cek...czytaj dalej
How Safe Are Our Skies
The September 11, 2001, attacks on the World Trade Centre and the Pentagon raised numerous questions about American and international aviation security. Former Director of Security of the International Air...czytaj dalej