Abstract.The complexity shown by some geometrical patterns of Roman mosaics and the high quality of their realization lead to think that for such patterns, unlike scenes with human or animal figures, a model of the general pattern was certainly not sufficient to guide the setting up; in order to answer this question one is led to conjecture the existence of diagrams (key diagrams) with which the craftsman, by looking at them, is able to identify (and/or remember) the geometrical structure of a basic element of the general pattern, as well as a way for constructing it – and possibly the whole pavement – with his usual instruments. This hypothesis is applied to some patterns which were well spread over the Roman world. The present study aims at showing how a given key diagram can apply to varied patterns and, conversely, how the making of a given complex pattern can rely on several articulated key diagrams.

中文翻译：

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使用关键图来设计和构建罗马几何马赛克？

摘要.罗马马赛克的一些几何图案表现出的复杂性及其实现的高质量导致认为对于这些图案，与人物或动物形象不同的场景，一般图案的模型肯定不足以指导设置; 为了回答这个问题，人们推测图（关键图）的存在，工匠通过观察这些图，能够识别（和/或记住）一般图案的基本元素的几何结构，以及一种用他常用的工具建造它的方法——可能还有整个人行道。这个假设适用于一些在罗马世界广泛传播的模式。本研究旨在展示给定的关键图如何适用于不同的模式，相反，