This paper establishes a Curry-Howard isomorphism for compilation and program execution by showing the following facts. (1) The set of A-normal forms, which is often used as an intermediate language for compilation, corresponds to a subsystem of Kleene’s contraction-free variant of Gentzen’s intuitionistic sequent calculus. (2) Compiling the lambda terms to the set of A-normal forms corresponds...

The notion of receptiveness arises in the π-calculus as a guarantee of determinacy in the behaviour of callable entities and was first investigated by Sangiorgi. The DπF process calculus, introduced by Francalanza and Hennessy, extends the π-calculus with located processes and location and link failures. In this paper we extend the notion of receptiveness to DπF and give sound characterizations...

Complete staghorn calculi are typically managed with percutaneous nephrolithotomy (PCNL). However, dilating nephrostomy and inserting a nephro access sheath can be difficult to perform without hydronephrosis. We reported the procedure of ureteroscopy-assisted retrograde nephrostomy (UARN) during PCNL. UARN is effective without dilating the renal collecting system in cases of complete staghorn c...

Abstract In this paper we study the properties of an algorithm, introduced in Browkin (Math Comput 70:1281–1292, 2000), for generating continued fractions field p -adic numbers $$\mathbb Q_p$$ Q p . First all, obtain analogue Galois’ Theorem classical fractions. Then, i...

objective(s): this study was designed to indicate whether different fractions from artemisia biennis hydroethanolic extract could provide cytoprotection against oxidative stress and apoptosis induced by doxorubicin (dox) in rat pheochromocytoma cell line (pc12). material and methods:cell viability was determined by mtt assay. also, activation of caspase-3 and superoxide dismutase were evaluated...

Evidence is presented which indicates that shunting of small amounts of blood from right to left occurs frequently through interatrial communications. Such right-to-left shunts are of small magnitude in the usual case of atrial septal defect, but it appears that of the fractions of blood shunted, a greater proportion has originated from the inferior vena cava than from the superior vena cava.

In this paper, we present Reverse Restructuring, a new calculus for solving the semantic matching problem. For narrowing, advanced selection rules are commonly seen as an appropriate method to reduce the search space. Our approach to design a special calculus for special goals is another way of reducing the eeciency defects of narrowing. Reverse Restructuring constructs derivations in the rever...