What is a 1-dimensional mirror?

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A 1-dimensional mirror is defined as a hyperplane in Euclidean space that reflects the surrounding environment while keeping all points on its surface fixed. In contrast, a 3-dimensional mirror reflects a more complex spatial arrangement. The information contained within a mirror is limited to its fixed points, as it only reflects what is in front of it through perpendicular projection. The discussion highlights the importance of clearly defining terms like "mirror" and "contain" to avoid confusion. Understanding these concepts is essential for grasping the nature of mirrors in geometric contexts.
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What is a 1-dimensional mirror? What is a 3-dimensional mirror? How much information does a mirror contain? DE
 
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A mirror (unless otherwise defined) is a hyperplane of the surrounding Euclidean space and mirroring a reflection of this space into the space behind the mirror with all points on the mirror fixed.

A mirror itself only contains the fixed points. But all points on the face side of the mirror are perpendicularly projected on this surface if you stand right in front of it.

The difficulty with your question is, that you neither defined mirror nor contain.
 

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