Uncontrolled self-set tree growth allowed by BR after the end of steam has created today's overhanging tree canopy, with the resulting adhesion problems to which RAIB attributes this collision.

K-theory was developed by Atiyah and Hirzebruch in the 1960s based on work of Grothendieck in algebraic geometry. It was introduced as a tool in C^*-algebra theory in the early 1970s through some specific applications described below. Very briefly, K-theory (for C^*-algebras) is a pair of functors, called K₀ and K₁, that to each C^*-algebra A associate two Abelian groups K₀(A) and K₁(A).

I remember the last time I saw Macbeth played, the discrepancy I felt at the changes of garment which he varied, the shiftings and reshiftings, like a Romish priest at mass.

“You probably don’t go wrong,” he said, “by looking at some of the largest companies that have dominant positions within their sectors and have experienced management teams that have been through the up cycle and down cycle and they don’t get overly exuberant when things go great or overconcerned when going down.”