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Why is the Heaviside step function named after Heaviside?

Oliver Heaviside invented what is called "symbolic calculus" which was a mathematically non-rigorous (at that time) but very effective way of solving differential equations that occur in physics and ...
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Origin of the Heaviside function?

"Oliver Heaviside ... what he was doing, why he developed his step function"? A short answer is that Heaviside was interested, as a practical electrical engineer, in transient effects in complex ...
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A peculiar quote from Oliver Heaviside

Since I have no shame, I screen-shotted the reference that J.G. found:
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This gives the four equations in the form Heaviside came up with: $$\varepsilon E = \rho$$ $$\nabla \times E = - \mu \frac{\partial H}{\partial t}$$ $$\nabla \cdot \mu H = 0$$ \nabla \times H = k E +...