Monthly Archives: December 2025

Tensors are geometric objects

Originally, while writing the previous post, I was convinced that this one should be devoted to the Grassmann (or exterior) algebra.  I even began drafting it and managed about half a page before realizing that, if the promise of a … Continue reading

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Conformal structure – until the puppy grows up

On my other blog, I promised Anna—the ever‑curious Reader—that I would finally tackle the subject of conformal structure. So here it begins: a gentle introduction to a concept that admits many gateways. Precise definitions abound online, of course, and one … Continue reading

Posted in Conformal structure, Geometry | Tagged , | 26 Comments

Growing Out of the Sandbox

On my other blog, I spent quite some time exploring a simplified universe—one defined by just one spatial and one temporal dimension. When space is only one-dimensional, the possibilities for motion are strictly limited: light can travel either to the … Continue reading

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