一句话:证明不同 MELL 证明网具有不同 Taylor 展开,并由此导出关系模型对 MELL 的完备性。
本文研究乘法指数线性逻辑(MELL)证明网的 Taylor 展开及其与关系模型完备性的关系。每个 MELL 证明网都可展开为一个 differential net,即其 Taylor 展开。作者证明该展开操作是单射的:两个不同的 MELL 证明网不可能具有相同的 Taylor 展开。作为推论,论文得到 MELL 的完备性结果:关系模型对 MELL 证明网是单射的,即两个 MELL 证明网在关系模型中相等,当且仅当它们可由 cut-elimination 公理化。该工作表明 Taylor 展开不仅能区分证明网,而且将展开这一语法操作与关系指称模型中的等式理论精确对应起来。
Each Multiplicative Exponential Linear Logic (MELL) proof-net can be expanded into a differential net, which is its Taylor expansion. We prove that two different MELL proof-nets have two different Taylor expansions. As a corollary, we prove a completeness result for MELL: We show that the relational model is injective for MELL proof-nets, i.e. the equality between MELL proof-nets in the relational model is exactly axiomatized by cut-elimination.