<div dir="ltr"><div>"I wrote this “petit livre” with one specific reader in mind: myself, when I was an undergraduate..."<br></div><div><br></div><div>"I am
convinced that mathematical ideas and examples precede formal
proofs and definitions. As d’Alembert said once: “Just go on...
and faith will catch up with you!”. You may see every now and
then a beautiful panorama emerging from the mist, like the
one on the frontispiece of this book, by Caspar David Friedrich
(Der Wanderer über dem Nebelmeer (1818)): a suggestion of the
mathematical world? I hope some motivated undergraduates of today will enjoy
some of these panoramas."<br></div><div><br></div><div><a href="https://arxiv.org/abs/1612.06373">https://arxiv.org/abs/1612.06373</a><br></div></div>