Back to the Future: A Fresh Look at Linear Temporal Logic

Author(s):  
Javier Esparza
Author(s):  
Michael Germana

Chapter 2 examines Ralph Ellison’s Invisible Man as a text that ekphrastically simulates a moving or “peristrephic” panorama in general, and an antebellum antislavery panorama in particular. In the process, this chapter reads Ellison’s debut novel as a text indebted to and allusive of, while ironically commenting on, the life and career of celebrated fugitive and peristrephic panoramist Henry Box Brown, who shipped himself in a sealed wooden crate from Richmond to Philadelphia and thus from slavery to freedom in 1849. Brown’s subsequent efforts to navigate the terrain of abolitionist discourse within a white supremacist culture led him to create a moving panorama called the Mirror of Slavery, which chronicled the cruelties of slavery, yet ended with the promise of universal emancipation. In appropriating the visual grammar of the antislavery panorama, Ellison also extends its ambivalent temporal logic to create his own alternative history in service of the future.


Automatica ◽  
2021 ◽  
Vol 130 ◽  
pp. 109723
Author(s):  
Sahar Mohajerani ◽  
Robi Malik ◽  
Andrew Wintenberg ◽  
Stéphane Lafortune ◽  
Necmiye Ozay

2020 ◽  
Vol 67 (6) ◽  
pp. 1-61
Author(s):  
Javier Esparza ◽  
Jan Křetínský ◽  
Salomon Sickert

2014 ◽  
Vol 513-517 ◽  
pp. 927-930
Author(s):  
Zhi Cheng Wen ◽  
Zhi Gang Chen

Object-Z, an extension to formal specification language Z, is good for describing large scale Object-Oriented software specification. While Object-Z has found application in a number of areas, its utility is limited by its inability to specify continuous variables and real-time constraints. Linear temporal logic can describe real-time system, but it can not deal with time variables well and also can not describe formal specification modularly. This paper extends linear temporal logic with clocks (LTLC) and presents an approach to adding linear temporal logic with clocks to Object-Z. Extended Object-Z with LTLC, a modular formal specification language, is a minimum extension of the syntax and semantics of Object-Z. The main advantage of this extension lies in that it is convenient to describe and verify the complex real-time software specification.


2002 ◽  
Vol 12 (6) ◽  
pp. 875-903 ◽  
Author(s):  
BART JACOBS

This paper introduces a temporal logic for coalgebras. Nexttime and lasttime operators are defined for a coalgebra, acting on predicates on the state space. They give rise to what is called a Galois algebra. Galois algebras form models of temporal logics like Linear Temporal Logic (LTL) and Computation Tree Logic (CTL). The mapping from coalgebras to Galois algebras turns out to be functorial, yielding indexed categorical structures. This construction gives many examples, for coalgebras of polynomial functors on sets. More generally, it will be shown how ‘fuzzy’ predicates on metric spaces, and predicates on presheaves, yield indexed Galois algebras, in basically the same coalgebraic manner.


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