[1]:http://pages.bangor.ac.uk/~mas010/pdffiles/PROBAMTX.PDF
[2]:http://pages.bangor.ac.uk/~mas010/nonab-a-t.html


I have made a note of some problems in the area of [Nonabelian algebraic topology and homological algebra][1] in 1990, and in Chapter 16 of the book in the same area and advertised [here][2] there is a note of 32 problems and questions in this area which had occurred to me. These problems may well seem "narrow", and/or "out-of-line" of current trends, but I thought thought the latter big book ought  not to be seen as any kind of final product, but hopefully as the beginning of a new story. Also it is interesting to record for any area of study what it might be hoped to do but so far does not.