1. We refer to a region £2 of the extended z-plane as a (parallel) slit domain if =o £Í2, and if the components of the boundary, dß, are either points, or segments ("slits") parallel to a common line, which without loss of generality will be assumed to be the y-axis 'z = x-\-iy). It was originally conjectured by Koebe that if two slit domains ßi and Í22 are conformally equivalent, that is, if t...

For over a quarter of a century, one small corner of the voluminous literature on the Coase theorem has been the scene of an animated and, at times, heated debate between Walter Block and Harold Demsetz. Over the entire course of the debate, Block (1977, 1995, 2000) has argued that when individuals have only psychic income with which to maintain their property rights, the Coase theorem fails. A...

Since density is considered as one of the most important numerical indices to explain quantitative values of a plant community by affecting on many aspects and activity of ecosystem, on the other hand, awareness about plants distribution pattern in environment is an essential preparation for measurement and study of vegetative cover, therefore, in this research determination of density and dist...