FOREVER IS A DAY - SUPERTASKS IN PITOWSKY AND MALAMENT-HOGARTH SPACETIMES

被引：64

作者：

EARMAN, J

NORTON, JD

机构：

来源：

PHILOSOPHY OF SCIENCE | 1993年 / 60卷 / 01期

关键词：

D O I：

10.1086/289716

中图分类号：

N09 [自然科学史]; B [哲学、宗教];

学科分类号：

01 ; 0101 ; 010108 ; 060207 ; 060305 ; 0712 ;

摘要：

The standard theory of computation excludes computations whose completion requires an infinite number of steps. Malament-Hogarth spacetimes admit observers whose pasts contain entire future-directed, timelike half-curves of infinite proper length. We investigate the physical properties of these spacetimes and ask whether they and other spacetimes allow the observer to know the outcome of a computation with infinitely many steps.

引用

页码：22 / 42

页数：21

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