Cases of plagiarism in mathematics Are there known cases of plagiarism in mathematics? The writing practices in mathematics are clearly different from the writing practices in the humanities. In the latter area I roughly know how to characterize plagiarism because examples are known. But I do not know how plagiarism is possible in mathematics, except for blunt copies of text. 

Do you know about examples how plagiarism in mathematics looks like?
The American Maths Society has been caught:

A plagiarised book on maths history.

Another notorious case concerned an Eastern European academician in the bad old days. He began with a bit of self-plagiarism, re-publishing his own works in English language journals. But then he moved on to translating and publishing as his own papers from Russian journals. He was exposed when a Russian mathematician, on moving/escaping to Paris, discovered that his best theorems had been stolen. I think the AMS published an analysis of the whole sad affair.