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the hard ones are unsolved research problems? I haven't read the book, so he poses research questions as exercises to the reader...?
by djtango 3y ago
the hard ones are unsolved research problems?
I haven't read the book, so he poses research questions as exercises to the reader...?
- Jtsummers 3y agoYes. He has a system for assigning difficulty ratings to exercises. I don't have the books at hand, but the highest level were open research problems, potentially suitable for PhD work and the like.
- m463 3y ago> He has a system for assigning difficulty ratings He's like a depth-first system guy... I suspect he only planned the 7 volumes because it was a requirement to start out wide.
- elkekeer 3y agoWho wouldn't?
- kbob 3y agoHe doesn't just spring them on the reader. Each exercise has a difficulty label. Level 50, IIRC, is for unsolved questions.
- cschmidt 3y agoOne level 50 problem was Exercise 1.2.6.63: "Develop computer programs for simplifying sums that involve binomial coefficients" Which was solved in the book titled "A = B": https://www2.math.upenn.edu/~wilf/AeqB.html https://www2.math.upenn.edu/~wilf/AeqB.html or https://www.amazon.com/B-Marko-Petkovsek/dp/1568810636 https://www.amazon.com/B-Marko-Petkovsek/dp/1568810636