# Mathematician talk:Oliver Heaviside

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I wonder if he was slightly overweight... --GFauxPas (talk) 03:00, 7 May 2014 (UTC)

- Maybe he had a sister called Olivonda. --prime mover (talk) 05:26, 7 May 2014 (UTC)

## Operational Calculus

Interesting. Googling tells me that Heaviside did not know about Laplace's transform. What his innovation was to treat the differential operator as a variable $p$, a definite integral as an inverse $p^{-1}$, and then doing algebra with differential equations treated as functions in $p$. It turns it his results are similar to, or perhaps identical to, Laplace transforms. I don't have a source for this historical information other than Google, but maybe I can get my hands on one. --GFauxPas (talk) 08:48, 19 December 2016 (EST)

- Have you not read the contents of the resource linked to from the Sources section? --prime mover (talk) 11:40, 19 December 2016 (EST)