3.0 out of 5 stars
A reader of math texts, April 24 2012
By Andrew Clark - Published on Amazon.com
This review is from: The Mathematician Sophus Lie: It was the Audacity of My Thinking (Paperback)
This is a well-written text which has a depth of material about Lie's life and times. I was hoping it would have the necessary mathematical material as in Ebbinghau's biography of Zermelo or Yandell's "The Honor Class." As one of the reviewer's wrote, this is not a text to gain an historical persepctive on Lie groups from their inception. That's unfortunate but for those who are interested in Lie's life and times, it is a good book.
5.0 out of 5 stars
Where Lie groups came from, Dec 7 2011
By Professor Joseph L. McCauley "Joseph L. McCauley" - Published on Amazon.com
This review is from: The Mathematician Sophus Lie: It was the Audacity of My Thinking (Paperback)
I received this book in Norwegian as a gift several years ago and have only read it in part, but I can strongly recommend it. The book is thick, it covers Lie's personal life as well as his mathematical contributions.
Lie was born in Nordfjoreid, a small village in Norway just south of the Sunnmøre Alps. He studied and taught at the University of Oslo (UiO), where he was reputed to have jumped out a window after the students locked him in a classroom as prank. He was apparently extreme as Norwegians go. Every Norwegian, more or less, hikes and skis in the mountains from an early age, but Lie is reported to have walked 80 km/day consistently during his years at UiO. He became a friend of Felix Klein early-on. Both were geometers. Lie was arrested and held as German spy while hiking south from Paris toward the Alps during the Franco-Prussian War. He was carrying letters from Klein in German which the French police feared were coded information. When Klein left Leipzig he got Lie the position there. The many volumes with Engel and Scheffers were written there. If you ask a Leipziger today who were Klein and Lie, you will likely be treated with a blank stare. Lie eventually left Leipzig and returned to Oslo.
Lie set for himself and answered the question: when is a continuous group of transformations integrable. He thereby constructed Lie algebras as on the road to the answer. Lie algebras arise from following Lie's path: study a tranformation near the identity. Lie's work is directly applicable to classical mechanics. My book 'Classical Mechanics' has a chapter on Lie groups and uses Lie's ideas throughout. The extension of the theory of Lie algebras by Cartan has been used heavily in nuclear physics and quantum field theory. The discovery of root diagrams for a Lie algebra provided the system for classifying particles in the SU(3) theory. Modern physics, and our deeper understanding of integrable systems in classical mechanics, would be unthinkable without Lie groups and Lie algebras.
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3.0 out of 5 stars
Audacity, Feb 2 2012
By Malcolm Cameron - Published on Amazon.com
This review is from: The Mathematician Sophus Lie: It was the Audacity of My Thinking (Paperback)
The Mathematician Sophus Lie: It was the Audacity of My Thinking by Arild Stubhaug
This book is similar in style to "Gösta Mittag-Leffler: A Man of Conviction" by the same author. As it does not have a preface it does not specify a target audience to guide potential readers. But it is not for those seeking to appreciate mathematics via the history of an individual mathematician within the intellectual environment of the time or those seeking an informal narrative.
"Tracking Him Down: A Torrent of Stories" is an encouraging beginning being a series of anecdotes bought forward from the main text; while the chapter "Into Mathematical History" does explain some of Sophus Lie's work and his field of study. But these two chapters are not typical of the book. It would be useful to fold back all the useful content of all subsequent chapters into the anecdotes adding some of Sophus Lie's mathematics and some commentary. After all, his story is worth telling. It was Sophus Lie who said from experience "I think that a Mathematician is comparatively well suited to be in Prison" after being mistaken for a spy on a walk from Paris to Milan.
Given that Sophus Lie lectured to the Student Society and his father the Worker's Academy (as it was later called) the modern reader should demand for the same. "The people's or worker's academy movement" we are told "began in England as a popular extension of cultural awakening for the general public and reached Sweden in 1880 ..." Let us keep it alive.
Mathematicians will retain public support only if those interested (with a smattering of mathematical background) are given an opportunity to appreciate what is going on in their endeavor. It was said of Sophus Lie in 1886 that:
And he doth speak a unique Tongue
That few can read, and fewer write.
`Tis Greek to Folk both old and young
And shall scarcely set the World alight.
A dialect did Sophus Lie,
Of this rare Lingo learn,
And joined the tribe of Two or three
Who, its Meaning could discern.
Yet today's general audience may understand as much (or perhaps, as little) as a more professional audience. A few diagrams and equations will not scare this audience if informally mixed with the motivation, philosophy, argument, competition, anecdotes, human interest, and humorous perhaps aphoristic exaggerations.
Malcolm Cameron
3 February 2012