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# La congettura di Poincaré

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Henry Poincaré è stato uno dei più grandi geni della storia della matematica: i suoi studi hanno aperto la strada a innumerevoli ricerche sviluppate nel corso del XX secolo. In particolare, la celebre congettura da lui enunciata, in grado di dirci molto sulla possibile natura e sulla forma del nostro universo, ha impegnato. le maggiori menti matematiche del Novecento ed è
...more

Hardcover, 360 pages

Published
April 2007
by Rizzoli
(first published 2007)

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## Community Reviews

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Start your review of La congettura di Poincaré

Apr 21, 2015
Manny
rated it
really liked it
·
review of another edition

Recommends it for:
Anyone who wants to understand what math is really about

My meeting with this book fell considerably short of love at first sight. Not saw it on sale yesterday at a Melbourne bookstore and asked if I thought it might be interesting. I picked it up, glanced at the less-than-brilliant cover and leafed through it for a minute or two; the writing seemed lackluster and the first anecdote I found was one I'd seen before. I was about to put it back when I reconsidered. It cost $10 and was evidently an easy read. I'd always wondered what the deal was with the
...more

Dec 19, 2011
Steven
rated it
did not like it
·
review of another edition

Shelves:
mathematics,
2011-read

There was some explanation earlier in the book, but later explanation was poor. I came away with little understanding of how the Poincare conjecture was solved. The book was a disappointment, but did provide a reference to book by Jeffrey Weeks that might offer better layman-level explanations of topological concepts.

*Fermat's Last Theorem*, with far more mathematical content. If any layman wants a glimpse into the world of top-level mathematics, I cannot recommend a better book.

Aug 15, 2007
Sean
rated it
it was amazing
·
review of another edition

Recommends it for:
anyone who has ever asked me what "mathematical research" is

As a recent grad student in mathematics I found this book incredibly interesting. It made me want to go on and get my Ph.D. in manifold theory.

Firstly, the book introduces many concepts by name, with some short descriptions, and then goes on to discuss them in some qualitative detail; how one concept leads to another; how concepts fail to connect. For me, at least, this was difficult to follow. Granted, in order to truly understand what is being discussed, you would need to understand the mathematics; perhaps this is just an insurmountable problem in trying to translate high-level and ...more

Jan 26, 2010
Chris
rated it
it was ok
·
review of another edition

Recommends it for:
People who love math but have the patience to listen to someone poorly explain topology

Shelves:
2010-books

This book was about as painful as reading the book of Genesis: its pages mostly comprise a chronological list of mathematicians ("and so-and-so's work begot so-and-so's thesis"...) interspersed with definitions sans explanation or example (a group, a ring, etc.). The highlights were the only occasional example of geometry in mathematical physics or when the author found time to elaborate a little more on an interesting property of a certain metric or surface structure.

In fact, the best part of ...more

In fact, the best part of ...more

Takes some imagination and thinking to get ones mind around the concepts discussed but all in all an awesome book. One of my favorite when it comes to popular science.

Its kind of like a "history of topology", "story of a frustrating problem and the journey to its solution" and discussion between you and the author about what topology really is about all wrapped into one book.

Apr 24, 2008
Richard
rated it
it was amazing
·
review of another edition

Recommends it for:
Nerds, history buffs, math geeks

Shelves:
mathamatics

I originally purchased this book to learn more about Gregory Perelman and the fields medal he turned down, but over the course of the book you get such a detailed explanation of the history of math, that I spent just as much time in wikipedia as I did reading this book. Fantastic read, for every type of math fan out there, of every level of proficiency.

Also, the resolutions of the images in the book are so poor it's as if the publisher printed out jpegs and made Xeroxes of them.

Oct 18, 2010
Andrew Thibodeau
rated it
really liked it
·
review of another edition

Shelves:
mathematics

The universe is a infinite topologically bounded three dimensional manifold. Did I say that right?

Really digging this book!

Oct 29, 2018
Vinh Dang
rated it
really liked it
·
review of another edition

Shelves:
science,
non-fiction

A very good introduction to the problem: there is no way to know the shape of the earth without a satellite. And the same for the universe.

Bolyai & Reimann section stood out to ...more

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“The willingness to reexamine lifelong beliefs because of conflicting data takes enormous courage, and contrasts sharply with recent examples of public discourse in which our political, cultural, and religious leaders have fit data to preconceived theories.”
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“Sadly, we know almost nothing about Euclid (c. 325-c. 265 BCE).32 We know even less about him than we do about Pythagoras, and what little we do know has been hotly contested by scholars. Euclid wrote at least ten books, only half of which have survived. A number of mutually consistent indications suggest that he lived after Aristotle and before Archimedes. He was one of the first mathematicians at the great library of Alexandria and there had gathered a group of talented mathematicians about him. Legends about him abound, many as (possibly apocryphal) insertions in other mathematicians' works. One tells that Ptolemy asked Euclid for a quick way to master geometry and received the reply, "There is no royal road to geometry." Another tells of a student who, after encountering the first proposition in the Elements, asked Euclid what practical use studying geometry could have. The mathematician allegedly turned to his slave and replied dismissively, "Slave, give this boy a threepence, since he must make gain of what he learns.”
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