By P.R. Halmos
From the Preface: "This publication was once written for the energetic reader. the 1st half contains difficulties, often preceded by way of definitions and motivation, and occasionally by way of corollaries and old remarks... the second one half, a truly brief one, contains hints... The 3rd half, the longest, contains suggestions: proofs, solutions, or contructions, reckoning on the character of the problem....
This isn't an creation to Hilbert house conception. a few wisdom of that topic is a prerequisite: no less than, a research of the weather of Hilbert house concept should still continue at the same time with the examining of this book."
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