DalLago+Roversi+Vercelli:2009-LFCS (In proceedings)
|
Author(s) | Ugo Dal Lago, Luca Roversi and Luca Vercelli |
Title | « Taming Modal Impredicativity: Superlazy Reduction » |
In | Proceedings of Logical Foundations of Computer Science (LFCS09) |
Series | Lecture Notes in Computer Science |
Volume | LNCS 5407 |
Page(s) | 137 -- 151 |
Year | 2009 |
Publisher | Springer Verlag |
URL | http://www.di.unito.it/~rover/RESEARCH/PUBLICATIONS/2009-LFCS/DaLagoRoversiVercelli-09LFCS.pdf |
Note | An extended version is http://arxiv.org/abs/0810.2891 |
Abstract |
Pure, or type-free, Linear Logic proof nets are Turing complete once cut-elimination is considered as computation. We introduce modal impredicativity as a new form of impredicativity causing the complexity of cut-elimination to be problematic from a complexity point of view. Modal impredicativity occurs when, during reduction, the conclusion of a residual of a box b interacts with a node that belongs to the proof net inside another residual of b. Technically speaking, superlazy reduction is a new notion of reduction that allows to control modal impredicativity. More specifically, superlazy reduction replicates a box only when all its copies are opened. This makes the overall cost of reducing a proof net finite and predictable. Specifically, superlazy reduction applied to any pure proof nets takes primitive recursive time. Moreover, any primitive recursive function can be computed by a pure proof net via superlazy reduction. |
@inproceedings{DalLago+Roversi+Vercelli:2009-LFCS,
volume = {LNCS 5407},
month = {January},
author = {Dal Lago, Ugo and Roversi, Luca and Vercelli, Luca},
note = {An extended version is http://arxiv.org/abs/0810.2891},
series = {Lecture Notes in Computer Science},
booktitle = {{P}roceedings of {L}ogical {F}oundations of {C}omputer {S}cience
(LFCS09)},
url = {http://www.di.unito.it/~rover/RESEARCH/PUBLICATIONS/2009-LFCS/DaLagoRoversiVercelli-09LFCS.pdf},
abstract = {Pure, or type-free, Linear Logic proof nets are Turing complete
once cut-elimination is considered as computation. We introduce
modal impredicativity as a new form of impredicativity causing the
complexity of cut-elimination to be problematic from a complexity
point of view. Modal impredicativity occurs when, during
reduction, the conclusion of a residual of a box b interacts with
a node that belongs to the proof net inside another residual of b.
Technically speaking, superlazy reduction is a new notion of
reduction that allows to control modal impredicativity. More
specifically, superlazy reduction replicates a box only when all
its copies are opened. This makes the overall cost of reducing a
proof net finite and predictable. Specifically, superlazy
reduction applied to any pure proof nets takes primitive recursive
time. Moreover, any primitive recursive function can be computed
by a pure proof net via superlazy reduction. },
title = {{T}aming {M}odal {I}mpredicativity: {S}uperlazy {R}eduction},
copyrightspringer = {http://www.springer.de/comp/lncs/index.html},
publisher = {Springer Verlag},
pages = {137 -- 151},
year = {2009},
}
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