Abstract The first part of this note deals with the importance of the polytechnical tradition for mathematical models. 1 In the second part I discuss the question of the “semantic shift” in the mathematical usage of the word “model” (M. Epple), 2 that means, the passage from concrete material objects to models in the modern sense of the word – abstract entities satisfying a certain system of axioms. My aim is to provide some new information on the theme and to open a new and in my opinion essential aspect – the polytechnical tradition – to look at it. The two parts are only in a loose connection.

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摘要 本说明的第一部分涉及理工学院传统对数学模型的重要性。1 在第二部分中，我讨论了“模型”（M. Epple）这个词的数学用法中的“语义转换”问题，2 这意味着从具体的物质对象到现代意义上的模型的转变– 满足某个公理系统的抽象实体。我的目标是提供一些关于该主题的新信息，并打开一个新的、在我看来必不可少的方面——理工传统——来看待它。这两个部分只是松散的连接。