Mathematics is kept alive by the appearance of new unsolved problems, problems posed from within mathematics itself, and also from the increasing number of disciplines where mathematics is applied. This book provides a steady supply of easily understood, if not easily solved, problems which can be considered in varying depths by mathematicians at all levels of mathematical matu...(展开全部)

Unsolved Problems in Number Theory contains discussions of hundreds of open questions, organized into 185 different topics. They represent numerous aspects of number theory and are organized into six categories: prime numbers, divisibility, additive number theory, Diophantine equations, sequences of integers, and miscellaneous. To prevent repetition of earlier efforts or duplic...(展开全部)

Unsolved Problems in Number Theory contains discussions of hundreds of open questions, organized into 185 different topics. They represent numerous aspects of number theory and are organized into six categories: prime numbers, divisibility, additive number theory, Diophantine equations, sequences of integers, and miscellaneous. To prevent repetition of earlier efforts or duplic...(展开全部)

Mathematics is kept alive by the appearance of new unsolved problems, problems posed from within mathematics itself, and also from the increasing number of disciplines where mathematics is applied. This book provides a steady supply of easily understood, if not easily solved, problems which can be considered in varying depths by mathematicians at all levels of mathematical matu...(展开全部)

Internationally known theoretical physicist and bestselling popular science writer Lawrence Krauss explores cosmology's greatest unanswered questions.Three of the most important words in science are 'I don't know'. Not knowing implies a universe of opportunities - the possibility of discovery and surprise. Our understanding of cosmology has advanced immeasurably over the last f...(展开全部)

Since 1859, when the shy German mathematician Bernhard Riemann wrote an eight-page article giving a possible answer to a problem that had tormented mathematical minds for centuries, the world's greatest mathematicians have been fascinated, infuriated, and obsessed with proving the Riemann hypothesis. They speak of it in awed terms and consider it to be an even more difficult pr...(展开全部)

Since 1859, when the shy German mathematician Bernhard Riemann wrote an eight-page article giving a possible answer to a problem that had tormented mathematical minds for centuries, the world's greatest mathematicians have been fascinated, infuriated, and obsessed with proving the Riemann hypothesis. They speak of it in awed terms and consider it to be an even more difficult pr...(展开全部)

根据所受的教育，约翰·德比希尔（John Derbyshire）是一位数学家和语言学家；根据所从事的职业，他是一位系统分析师；而在业余时间，他是一位著名的作家。 他的成名作是《梦见柯立芝》（Seeing Calvin Coolidge in a Dream），这部l996年出版的小说大受人们欢迎，亚德利（Jonathan Yardley）在《华盛顿邮报·图书世界》（Washington Post Book World）上对它赞赏有加，《纽约时报·书评》（The New York Times Book Review）、《纽约客》（The New Yorker）、《波士顿环球报》（The Bosun Globe）等报刊也一致给予好评。他的作品还频繁出现在《国家评论》（National Review）和《新标准》（The New Criterion）杂志上...(展开全部)