Numerous theoretical designs based on the geometrical shape of ad quadratum, sequences of squares or/and octagons have been used to speculate for the existence of archetype patterns in architecture. However, up to now no archaeological evidence of the existence of any such pattern has been documented. The present work examines whether a diagram incised on stone found in the Octagon in Thessaloniki could be a first evidence of a conceptual design in architecture. Two statistically validated models are presented, one to explain the geometrical patterns on the Octagon diagram and another to describe the Octagon’s ground plan. The results are anticipated to contribute not only to the discussion concerning the function of the Octagon monument, but also to the debate concerning the role of type in architecture and the origin of form in central-plan and octagonal buildings.

中文翻译：

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塞萨洛尼基八边形的概念设计

许多基于四边形几何形状、正方形或/和八边形序列的理论设计已被用于推测建筑中原型模式的存在。然而，到目前为止，还没有任何考古证据证明存在任何此类图案。目前的工作检查在塞萨洛尼基八角形发现的石头上雕刻的图表是否可以作为建筑概念设计的第一个证据。提供了两个经过统计验证的模型，一个用于解释八角形图上的几何图案，另一个用于描述八角形的平面图。预计结果不仅有助于有关八角形纪念碑功能的讨论，