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The Art of Proof: Basic Training for Deeper Mathematics (Undergraduate Texts in Mathematics): Matthias Beck, Ross Geoghegan: 9781441970220: Amazon.com: Books
The Art of Proof: Basic Training for Deeper Mathematics (Undergraduate Texts in Mathematics): Matthias Beck, Ross Geoghegan: 9781441970220: Amazon.com: Books
Introduction to Fuzzy Sets, Fuzzy Logic,... by Chen, Guanrong