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Equation 31 · Part 1 · Einstein's Random Walk and the Mathematics of Genetic Drift

Symbol p

pp
pp

What this part means

p is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

p is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

…walls added. That is what a formal analogy done right looks like, and it is the reason a page of Kimura’s diffusion equation and a page of Einstein’s, with the axis labels covered, are the same page with x renamed p .

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Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

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