### Finite Differences

Here are a few notes about the symbol $ \Delta$. This symbol appears frequently in physics. Let $ \alpha$ be a real […]

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### Finite Differences

Here are a few notes about the symbol $ \Delta$. This symbol appears frequently in physics. Let $ \alpha$ be a real […]

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### Remarks on the Lorentz Transformation and One Question

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### The Lorentz Transformation

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Derive It

A Blog about Mathematical Physics

This is a summary of the second part of Appendix A in Albert Einstein’s book [1]. By second part, I mean the […]

This is an attempt to clarify the brief derivation of the Lorentz transformation in Albert Einstein’s book [1]. Suppose that the […]