I sent a paper to an elite journal (the top in the field). Two weeks later I got a decision "reject" but the editors added that "we believe it should deserve a good publicity and publication".
The paper was described by the associate editor as "of very good quality" and the reason for the rejection is that "the techniques used look rather far to me from the journal readership".
It should be mentioned that the main results of the paper are very much related to the scope of the journal. Moreover, this journal has already published more than 5 papers on the subject with results similar to those of mine (but in rather special cases, and according to few experts in the field no doubt that my new result is a significant step forward).
My questions are:
Is it common that a paper that contains results of high enough quality that are well in line with the journal scope, is rejected because the techniques are not familiar to the readership?
If it is common, could anyone explain the reason behind this policy? To me it seems odd, as in mathematics applying tools from one subject to solve problems in another subject, as long as it is done correctly, is considered to be a good development.