On disobedient histories

Schistosomiasis—A Disobedient Ureter, a Disobedient Diagnosis

Background: Schistosomiasis is rare in western countries, but remains a potentially serious disease. It is known to result in severe urogenital complications; prompt diagnosis can therefore significantly affect outcomes. Case Presentation: We report the case of a 41-year-old male with pleuritic chest pain and visible hematuria who had emigrated from Zimbabwe to the United Kingdom 20 years previ...

Triggers on Database Histories

Decoherent histories on graphs

The consistent histories approach to quantum mechanics is traditionally based on linearly ordered sequences of events. We extend the histories formalism to sets of events whose causal ordering is described by directed acyclic graphs. The need for a global time is eliminated and our construction reflects the causal structure faithfully.

On Inequalities between Subword Histories

By taking out letters from a word we get a subword. Both continuous sub-words (also called factors or simply subwords) and scattered subwords were extensively studied. In [4] the authors introduced Parikh matrices, structures that contain more information about the words than Parikh vectors, which tell us only the number of di $ffere\tau 1T$ letters building the word. $I_{l1}[5]$ the notion of ...

Bohmian Histories and Decoherent Histories

The predictions of the Bohmian and the decoherent (or consistent) histories formulations of the quantum mechanics of a closed system are compared for histories — sequences of alternatives at a series of times. For certain kinds of histories, Bohmian mechanics and decoherent histories may both be formulated in the same mathematical framework within which they can be compared. In that framework, ...