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Certified Subterm Criterion and Certified Usable Rules

In this paper we present our formalization of two important termination techniques for term rewrite systems: the subterm criterion and the reduction pair processor in combination with usable rules. For both techniques we developed executable check functions using the theorem prover Isabelle/HOL. These functions are able to certify the correct application of the formalized techniques in a given ...

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Although negative selection in the thymus and induction of anergy in the periphery have been widely accepted as mechanisms for controlling autoreactivity, much less attention has been devoted to the role of suppressor T cells in mediating dominant immunologic self-tolerance. In 1995, Sakaguchi et al. (1, 2) made the seminal observation that the transfer of CD4 ϩ T cells which had been depleted ...

Certified Bitcoins

Bitcoin is a peer-to-peer (p2p) electronic cash system that uses a distributed timestamp service to record transactions in a public ledger (called the Blockchain). A critical component of Bitcoin’s success is the decentralized nature of its architecture, which does not require or even support the establishment of trusted authorities. Yet the absence of certification creates obstacles to its wid...

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This thesis develops techniques and methods that extend the art and craft of storytelling, and in particular enable the creation of mobile cinema. Stories are always constrained by the medium in which they are told and the mode by which they are delivered to an audience. This dissertation addresses the design of content, systems, and tools that facilitate the emerging type of computational audi...