منابع مشابه
Equations for formally real meadows
We consider the signatures Σm = (0, 1,−,+, ·, ) of meadows and (Σm, s) of signed meadows. We give two complete axiomatizations of the equational theories of the real numbers with respect to these signatures. In the first case, we extend the axiomatization of zero-totalized fields by a single axiom scheme expressing formal realness; the second axiomatization presupposes an ordering. We apply the...
متن کاملFormally Verified Software in the Real World
We present an approach for building highly-dependable systems that derive their assurance from a formally-verified operatingsystem which guarantees isolation between subsystems. We leverage those guarantees to enforce security through non-bypassable architectural constraints, and through generation of code and proofs from the architecture. We show that this approach can produce a system that is...
متن کاملA formally based hard real-time kernel
In order to demonstrably satisfy hard real-time deadlines, a system must be predictable, and in particular the kernel must be predictable. In this paper we present and analyse a predictable kernel related to AORTA, a formal design language for hard real-time systems. The features of the kernel allow AORTA designs to be veriiably and semi-automatically implemented, and enable veriied guarantees ...
متن کاملA Formally-Proven Composable Architecture for Real-Time Systems
The Message Scheduled System (MSS) is a composable real-time architecture that allows the extension of systems at runtime without compromising timing guarantees. In this paper, we introduce the MSS architecture and discuss its guarantees as well as the way of proving the holding of these guarantees for any system that follows the MSS architecture.
متن کاملInversive meadows and divisive meadows
An inversive meadow is a commutative ring with identity and a total multiplicative inverse operation satisfying 0 = 0. Previously, inversive meadows were shortly called meadows. In this paper, we introduce divisive meadows, which are inversive meadows with the multiplicative inverse operation replaced by a division operation. We introduce a translation from the terms over the signature of divis...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Logic
سال: 2015
ISSN: 1570-8683
DOI: 10.1016/j.jal.2015.01.004