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Do many mathematicians write a lot (including expository articles)? Or are there a fair majority of mathematicians that just write papers and don't bother with expository material? Which is better? Do mathematicians lose out if they do not write expository material?

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closed as off topic by Loop Space, José Figueroa-O'Farrill, Harry Gindi, Martin Brandenburg, Charles Siegel Aug 5 '10 at 12:23

Questions on MathOverflow are expected to relate to research level mathematics within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

This is quite a vague question and not really focussed on research level mathematics. I suggest that you read the FAQ before asking another such question. – Loop Space Aug 5 '10 at 11:26
To supplement Andrew Stacey's comment, this would make a good blog discussion but as written a terrible MO question. – Theo Johnson-Freyd Aug 5 '10 at 20:13

G. H. Hardy recommended that young mathematicians spend time on research, and when they are older and less adroit at research they should write books (to pass on the knowledge they have amassed).

Probably in mathematics departments at top research universities, those who write primarily expository material will be at a disadvantage in salaries and promotions. On the other hand, mathematicians who write primarily exposition can find perfectly good positions at other types of institutions. For example: William Dunham, author of four well-received expository books, is Truman Koehler Professor of Mathematics at Muhlenberg College, Allentown, Pennsylvania.

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