Re: abutment = aboutement?

An abutment is an engineering construct for butting two things together, often in the context of bridges, whether over a river or between teeth, and seems quite unsuitable for this purpose.

Vaughan

I admit I don't recall abutment but abutting has a long history in spec sequence jargon the idea I think was that the spectral sequence runs to/ buts up against the E\infty term or is it to the object of which E\infty is the associated graded? sorry it's been so long... jim