Out of Line

My old popularisation paper (1993) `Out of line' has now been made into a web version by Marcus Brown, and is available from http://www.bangor.ac.uk/~mas010/outofline/out-home.html as pdf and html. I'll also mention math.AT/0702677 A new higher homotopy groupoid: the fundamental globular omega-groupoid of a filtered space which in a sense fills a gap in the construction of such higher homotopy groupoids, where the classical crossed complex, the cubical case, and the simplicial case had already been done by 1978. Ronnie Brown School of Computer Science, University of Wales, Bangor, Gwynedd LL57 1UT