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by amilein7minutes 1984 days ago
Did the same person write all these books, which altogether amount to upwards of 10k pages? From his website, he is quite an active research mathematician too. While just writing so many textbooks is a huge accomplishment in itself, the author has also made them available for free; I am lost for words at how prolific as well as generous the author is. I really want to know how this was possible, how long it took, and more about their motivation.