**REVIEWS***Duel at Dawn* is a delightful examination of the ways in which certain mathematicians have been made into mythical figures, and how the tropes of those canonical treatments have changed over the years. It's a fascinating and original book.

-- Peter Galison, author of *Einstein's Clocks, Poincare's Maps: Empires of Time*

Does romantic mathematics exist? Romantic mathematicians do. *Duel at Dawn* reveals how the great mathematicians of the Enlightenment used geometry to study the earth and heavens, while their 19th century counterparts cherished internal beauty rather than practicality. Amir Alexander's original and convincing book opens a new path in the history of mathematics.

-- Jean-Michel Kantor, co-author of *Naming Infinity: A True Story of Religious Mysticism and Mathematical Creativity*

Through the life stories of three of the period's most controversial figures, Evariste Galois, Niels Henrik Abel and Janos Bolyai, Alexander reveals how their transgressive work changed mathematics and led to their lionization as Romantic heroes...Duel at Dawn neither talks over the head of its readers nor condescends, but instead ensures that the work of these Romantic mathematicians is not cloaked in obscurity. Of particular note is his breakdown of Hungarian mathematician Janos Bolyai's discovery of non-Euclidian geometry. Alexander does not shy away from the intricacies of the theory, nor the drawn out, convoluted history that underlies it. He takes readers through the process step by step, using plain language and clear diagrams to chart a course through the unknown. The larger narrative remains coherent without these more technical chapters, thanks to Alexander's ability to weave much of the mathematics into the fascinating lives of his subjects, but these in-depth studies of the math behind the men is very enriching. Mathematics need not be a scary, daunting subject, and Alexander does much to prove it.

-- Michael Patrick Brady Forbes.com

*Duel at Dawn* suggests how preconceptions about the trappings of genius have radiated from art to maths. But its greater value lies in peeling back the layers of hagiography from figures such as Galois to reveal gloriously complicated men.

-- Jascha Hoffman Nature

With tremendous attention to detail, historian Alexander examines the lives of 18th and 19th century mathematicians, finding much evidence to support his theory that the earlier geniuses of math (like Évariste Galois and Neils Henrik Abel) cultivated an artistic temperament, living short but fiery lives with little recognition, while the next generation (Jean le Rond d'Alembert, Leonhard Euler) pursued mathematics (and life) with purity and rigor, becoming "successful men of affairs who were the bright stars of their era and lived to a ripe old age."...Alexander's personable history of mathematics over two centuries (rounded out by a brief look at the present and future of the field) is filled with biographical details that will interest devoted mathematicians and historians of math or science.

-- Publishers Weekly online

This is a fascinating and provocative book. It is also extremely readable: the accounts of Galois, Abel, Cauchy and Bolyai and their posthumous reputations are engaging and entertaining, and along the way we meet many other fascinating personalities, including Guglielmo Libri, the aristocratic revolutionary, mathematician and stealer of rare books. Alexander's arguments are illuminating.

-- Tony Mann Times Higher Education

Alexander sees Galois's death as a turning point in the history of modern mathematics, a point at which math became less a study of nature than a purely abstract realm of its own, uncontaminated by the external world. He skillfully tells the story of this change, weaving it around the often tragic lives of the mathematicians most responsible for the change...[A] marvelous history.

-- Martin Gardner New Criterion

Because it is such an engrossing story, it's easy to forget that the book's purpose also is to educate. Alexander conveys a general sense of who mathematicians were and how they fit in with society.

-- Leigh Arber Bookslut

Though the Romantic ethos has persisted for a surprisingly long time among mathematicians, Alexander suspects that a cultural change is even now underway: reliance upon computers is replacing the mathematician-as-tragic-hero with the mathematician-as-skillful-nerd. Fascinating human faces peer out at the reader from behind seemingly sterile formulas.

-- Bryce Christensen Booklist

[Alexander's] sensitive and thoughtful presentation illuminates the inner geometry of mathematical experience, leaving us to ponder whether its creators' parallel lives and works finally meet.

-- Peter Pesic Times Literary Supplement