3,305 research outputs found

    An Instantiation-Based Approach for Solving Quantified Linear Arithmetic

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    This paper presents a framework to derive instantiation-based decision procedures for satisfiability of quantified formulas in first-order theories, including its correctness, implementation, and evaluation. Using this framework we derive decision procedures for linear real arithmetic (LRA) and linear integer arithmetic (LIA) formulas with one quantifier alternation. Our procedure can be integrated into the solving architecture used by typical SMT solvers. Experimental results on standardized benchmarks from model checking, static analysis, and synthesis show that our implementation of the procedure in the SMT solver CVC4 outperforms existing tools for quantified linear arithmetic

    LGBT MPs and Candidates in the British General Election May 2015: The State of Play

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    The UK has led the way in the inclusion of out LGBT politicians in Westminster. In this post, Andrew Reynolds presents the findings of a recent report which discusses LGBT candidates and politicians in the context of the upcoming election. You can see a full version of the report her

    Transatlantic Sensationalism and the First Printing of RubĂ©n DarĂ­o’s ‘A Roosevelt’.

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    Nicaraguan poet RubĂ©n DarĂ­o once posed the following question concerning the effects of U.S. domination of Cuba 15 years following the Spanish American War: “¿QuĂ© espectĂĄculo ofrece hoy dĂ­a ese pueblo al espectador imparcial? El de una colonia disimulada donde a las aspiraciones de veinte años de lucha ha sucedido un oscuro servilismo al oro yanqui” (“RefutaciĂłn” 111). DarĂ­o suggests that readers visually perceive the situation, that they trust “impartial spectators” in order to truly comprehend the U.S. domination in the region. Spectacles are events based on the optics of the consuming observers; viewers who, at their own leisure, decipher visual productions and performances. Unsurprisingly, DarĂ­o himself is the informed spectator and enlightens readers to the colonialist and financial burdens imposed on Cuba. The poet continually implemented this didactic maneuver to uncover the “spectacles” of U.S. domination following el desastre of 1898. The spectacle of the “lucha” of U.S.-Latin American relations, as construed by DarĂ­o, is no more evident than in the first printing of his seminal poem “A Roosevelt” in Madrid magazine Helios in 1904
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