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arXiv 1804.02540math.LO
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关于乘法线性逻辑中广义逻辑联结词切换条件的注记

A Note on Switching Conditions for the Generalized Logical Connectives in Multiplicative Linear Logic

Keio University(庆应义塾大学)

Yuki Nishimuta, Mitsuhiro Okada

AI总结:

本文提出了一种n元切换的定义,证明序列化定理在该定义下成立,但排除中庸性质不再成立,且仅纯张量或纯par联结词能满足两者。

摘要:

Danos和Regnier(1989)为乘法证明结构引入了par切换条件,并通过par切换简化了Girard(1987)的序列化定理。他们还将par切换推广为n元联结词的切换(此处称为n元切换),并证明了“排除中庸”性质成立,即任何“排除中庸”公式在他们的n元切换意义上都有正确的证明网。他们还指出,他们的切换不满足序列化定理。他们对n元联结词的切换定义是原始二元切换的自然推广。然而,存在许多其他可能的n元联结词切换定义。我们给出了一种替代的、"自然"的n元切换定义,并证明Olivier Laurent利用par切换证明序列化定理的方法适用于我们的n元切换;因此,序列化定理在我们的n元切换下成立。另一方面,我们指出,在我们的切换下,"排除中庸"性质不再成立。我们指出,除了纯粹张量基(或纯粹par基)联结词外,没有其他n元切换定义同时满足序列化定理和"排除中庸"性质。

英文摘要:

Danos and Regnier (1989) introduced the par-switching condition for multiplicative proof-structures and simplified the sequentialization theorem of Girard (1987) by means of par-switching. Danos and Regnier (1989) also generalized the par-switching to a switching for n-ary connectives (hereafter called an n-ary switching) and showed that the "expansion" property holds, namely that any "excluded-middle" formula admits a correct proof-net in the sense of their n-ary switching. They added a remark that the sequentialization theorem does not hold with their switching. Their definition of switching for n-ary connectives is a natural generalization of the original switching for the binary connectives. However, there are many other possible definitions of switching for n-ary connectives. We give an alternative and "natural" definition of n-ary switching, and we show that the proof of sequentialization theorem by Olivier Laurent with the par-switching works for our n-ary switching; Consequently, the sequentialization theorem holds for our n-ary switching. On the other hand, we remark that the "expansion" property no longer holds under our switching anymore. We point out that no definition of n-ary switching satisfies both the sequentialization theorem and the "expansion" property at the same time except for the purely tensor-based (or purely par-based) connectives.

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