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arXiv 2302.04685cs.LO
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作为资源项的策略及其范畴语义

Strategies as Resource Terms, and their Categorical Semantics

Lison Blondeau-Patissier, Pierre Clairambault, Lionel Vaux Auclair

AI总结:

本文用增广因果结构直接刻画正规资源项与 Hyland-Ong 博弈的对应,并构造归约不变的资源演算指称模型及资源范畴。

摘要:

正如 Tsukada 和 Ong 所表明的,简单类型的、正规且 eta-长的资源项对应于 Hyland-Ong 博弈中的博弈(plays),并按 Melliès 的同伦等价取商。这一富有启发性的结果的原始证明是间接的,依赖于关系模型相对于该对应两侧的单射性;特别是,资源演算的动态性仅通过关系模型与由正规化定义的正规项复合的相容性而被纳入考虑。在本文中,我们重新审视并扩展了这些结果。我们的第一项贡献是通过考虑我们称为增广(augmentations)的因果结构来重述这一对应;这些结构是 Hyland-Ong 博弈在同伦意义下的规范代表。这使我们能够直接且明确地说明其与正规资源项之间的联系。作为第二项贡献,我们将这一说明扩展到资源项的归约:基于将策略定义为增广的加权和这一概念,我们给出了一个资源演算的指称模型,该模型在归约下保持不变。一个关键步骤——也是我们的第三项贡献——是一个我们称为资源范畴的范畴模型;它对于资源演算的关系,正如微分范畴对于微分 λ-演算的关系。

英文摘要:

As shown by Tsukada and Ong, simply-typed, normal and eta-long resource terms correspond to plays in Hyland-Ong games, quotiented by Melliès' homotopy equivalence. The original proof of this inspiring result is indirect, relying on the injectivity of the relational model w.r.t. both sides of the correspondence -- in particular, the dynamics of the resource calculus is taken into account only via the compatibility of the relational model with the composition of normal terms defined by normalization. In the present paper, we revisit and extend these results. Our first contribution is to restate the correspondence by considering causal structures we call augmentations, which are canonical representatives of Hyland-Ong plays up to homotopy. This allows us to give a direct and explicit account of the connection with normal resource terms. As a second contribution, we extend this account to the reduction of resource terms: building on a notion of strategies as weighted sums of augmentations, we provide a denotational model of the resource calculus, invariant under reduction. A key step -- and our third contribution -- is a categorical model we call a resource category, which is to the resource calculus what differential categories are to the differential lambda-calculus.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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