We study the effects of market structure on entry using data from the UK fast food (counter-service burger) industry over the years 1991-1995. Over this period, the market can be characterized as a duopoly. We find that market structure matters greatly: for both firms, rival presence increases the probability of entry. We control for market specific time-invariant unobservables and their correl...

This project developed new results in the topology and foundations of quantum algorithms. It made major developments in the program for topological quantum field computation, including the design of substantially simplified lattice models with topological phases, and new insights into the universality classes of such models. Lattice gas simulations of various classical and quantum systems were ...

muslim theologians in the holy quran and the practice of what he describes as an alternative or used god's name, name (plural nouns) is called god. whether the names and attributes of god referred to in the qur'an, the sunnah and the consensus is not seized or the names of allah, is bound to be mentioned in the sources,among the important difference scholars of the islamic world, espe...

Abstract The ancient Zoroastrian hymn of worship dedicated to the frauuaṣ̌i- s (affirmative choices) righteous mortals and divinities refers an important discourse that takes place between unnamed poet-sage his mysterious rival, named Gaōtəma. figure Gaōtəma has intrigued Avestan scholars through years, but significance implications Gaōtəma's identity, presence in hymn, date not been seriously s...