The Mesozoic lacustrine revolution (MLR) represents a major evolutionary event in the continental realm (Cohen 2003 ). The decline in taxic diversity at the family level in lacustrine environments that took place during the late Paleozoic–Middle Triassic was reversed later in the Mesozoic, with diversifi cation seeming to have continued to the Quaternary, although potential biases may have affe...

We prove that the error term Λ(R) in the Weyl asymptotic formula #{En ≤ R } = VolM 4π R + Λ(R), for the Laplace operator on a surface of revolution M satisfying a twist hypothesis, has the form Λ(R) = RF (R) where F (R) is an almost periodic function of the Besicovitch class B, and the Fourier series of F (R) in B is ∑ γ A(γ) cos(|γ|R− φ) where the sum goes over all closed geodesics on M , and ...

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Change is part of life. Some changes are much discussed or even feared, with predictions that they will bring an end to the world as we know it. They seldom do. Contrary to these generalizations, however, there have been two major changes in Scotland in the past couple of years, arriving at the same time only by chance, as they are not linked in any way. They are both likely to have significant...

It is my honor and pleasure to speak at this conference in memory of Andrei Sakharov on the occasion of his 75th birthday. Even though I never met with Sakharov personally, I understand from my good friend Professor Fradkin that Sakharov expressed considerable interest in superstring theory during his exile in Gorky. I would have enjoyed discussing the subject with him, but after his return to ...

In this paper, we will prove that all non-planar minimal surfaces of revolution can be generated by functions of the form f = 1 C cosh(Cx), x ∈ R (as illustrated in Figure 1). We will accomplish this by • Assuming a non-planar minimal surface of revolution exists • Showing that the surface must be given by the above form • Prove that such a surface is indeed minimal. By minimal surface, we mean...

Traditionally, questions about the role of the arts in moral thought have focused on the arts’ role in the acquisition of new moral knowledge, the refinement of moral concepts, and the capacity to apply our moral view to particular situations. Here I suggest that there is an importantly different and largely overlooked role for the arts in moral thought: an ability to reconfigure the structure ...

We are living in a world which is undergoing profound changes brought about by rapid advances in science and technology. Among such changes, the most visible are those that relate to what is popularly referred to as the information revolution. The artifacts of this revolution are all around us: the e-mail, the world wide web, the cellular phone; the fax; and the desktop computer, among many oth...