The angel game, as described in [BeCG], has two players the “angel” and the “devil” who play alternately on the 2-dimensional integer lattice, Z. We refer to lattice points as vertices, and write o = (0, 0) for the origin. The angel has a certain fixed power p. (We refer to it as a p-angel .) It starts the game at the origin, and at each play moves to another vertex so that the change in each c...

At the time of an initial public offering, shares in a firm are typically held by venture capitalists, insiders, corporate investors, and angel investors. We examine the role of angel investors in the IPO process. We find that angel investors provide equity capital in industries that venture capitalists are less likely to serve and that shareholders in angel backed IPO firms are more likely to ...

We solve Conway’s Angel Problem by showing that the Angel of power 2 has a winning strategy. An old observation of Conway is that we may suppose without loss of generality that the Angel never jumps to a square where he could have already landed at a previous time. We turn this observation around and prove that we may suppose without loss of generality that the Devil never eats a square where t...

Recently the so called angel problem was solved independently by four authors. We establish an analogous theorem for triangulations of the plane and derive a solution to the original angel problem from this theorem. Compared to earlier solutions, our approach gives a simpler proof as well as a weaker winning angel. We show that an angel moving from the middle square to any other square of a 3 b...

The European Stroke Organisation held its first European Stroke Science Workshop in Garmisch-Partenkirchen, Germany (December 15–17, 2011). Stroke experts based in Europe were invited to present and discuss their current research. The scope of the workshop was to review the most recent findings of selected topics in stroke, to exchange ideas, to stimulate new research, and to enhance collaborat...