1. I N T R O D U C T I O N (1.1) Cluster algebras are a class of commutative algebras defined by a three step process. The first step is to specify an initial seed s, that is some set of initial generators of an ambient field F . Second, a subset X of F is constructed by mutating the initial seed s, mutating the resulting seeds, mutating the result of those mutations, and so forth ad infinitum....

Kit Fine (2007) argues that Frege’s puzzle and its relatives demonstrate a need for a basic reorientation of the field of semantics. According to this reorientation, the domain of semantic facts would be closed not under the classical consequence relation but only under a stronger relation Fine calls “manifest consequence.” I examine Fine’s informally sketched analyses of manifest consequence, ...

During their long-term outdoor field service, overhead transmission lines will be exposed to strikes by lightning, corrosion by chemical contaminants, ice-shedding, wind vibration of conductors, line galloping, external destructive forces and so on, which will generally cause a series of latent faults such as aluminum strand fracture. This may lead to broken transmission lines which will have a...

This is a draft of a chapter for a book, Modification, in preparation for the Cambridge University Press series Key Topics in Semantics and Pragmatics. The full manuscript is also available as a single document on my website, as are some additional chapters. The book is something between a textbook for people who already have a basic background in semantics and a survey of work in the area. For...

This paper examines portfolios within the framework of a dynamic asset-pricing model when investors can trade equity assets as well as bonds of many different maturities. We specify the model so that investors have demand for both a risky and a safe income stream. We characterize the resulting optimal equilibrium stock and bond portfolios and document that optimal bond investment strategies par...

Soybean lines lacking lipoxygenase (LOX) activity were compared with soybean lines having LOX activity for the ability to support growth and aflatoxin B1 production by the fungal seed pathogen Aspergillus flavus. Whole seeds, broken seeds, and heat-treated (autoclaved) whole seeds were compared. Broken seeds, irrespective of LOX presence, supported excellent fungal growth and the highest aflato...