Bunched polymorphism

Bunching for Regions and Locations

There are a number of applied lambda-calculi in which terms and types are annotated with parameters denoting either locations or locations in machine memory. Such calculi have been designed with safe memory-management operations in mind. It is difficult to construct directly denotational models for existing calculi of this kind. We approach the problem differently, by starting from a class of m...

Drosophila bunched integrates opposing DPP and EGF signals to set the operculum boundary.

The Drosophila BMP homolog DPP can function as a morphogen, inducing multiple cell fates across a developmental field. However, it is unknown how graded levels of extracellular DPP are interpreted to organize a sharp boundary between different fates. Here we show that opposing DPP and EGF signals set the boundary for an ovarian follicle cell fate. First, DPP regulates gene expression in the fol...

Bunched Hypersequent Calculi for Distributive Substructural Logics and Extensions of Bunched Implication Logic

Classical BI: Its Semantics and Proof Theory

We present Classical BI (CBI), a new addition to the family of bunched logics which originates in O’Hearn and Pym’s logic of bunched implications BI. CBI differs from existing bunched logics in that its multiplicative connectives behave classically rather than intuitionistically (including in particular a multiplicative version of classical negation). At the semantic level, CBI-formulas have th...

CDMA Bunched Systems for Improving Fairness Performance of the Packet Data Services

In this paper, bunched system is proposed for improving fairness performance of CDMA packet data systems. The fairness and throughput performance of bunched system are evaluated and compared with those of conventional cellular system. Broadcasting and selecting schemes are applied as the transmission scheme on downlink in bunched system. We develop a model of received Eb/No in bunched system. T...