Further Reading
- Topological fixed point theory of multivalued mappings, Lech Górniewicz, Springer, 1999, ISBN 978-0-7923-6001-8
- Topological degree theory and applications, Donal O'Regan, Yeol Je Cho, Yu Qing Chen, CRC Press, 2006, ISBN 978-1-58488-648-8
- Mapping Degree Theory, Enrique Outerelo, Jesus M. Ruiz, AMS Bookstore, 2009, ISBN 978-0-8218-4915-6
Read more about this topic: Topological Degree Theory
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“The unlucky hand dealt to clear and precise writers is that people assume they are superficial and so do not go to any trouble in reading them: and the lucky hand dealt to unclear ones is that the reader does go to some trouble and then attributes the pleasure he experiences in his own zeal to them.”
—Friedrich Nietzsche (1844–1900)
“Common sense should tell us that reading is the ultimate weapon—destroying ignorance, poverty and despair before they can destroy us. A nation that doesn’t read much doesn’t know much. And a nation that doesn’t know much is more likely to make poor choices in the home, the marketplace, the jury box and the voting booth...The challenge, therefore, is to convince future generations of children that carrying a book is more rewarding than carrying guns.”
—Jim Trelease (20th century)