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Equation 14 · Part 1 · Einstein's Random Walk and the Mathematics of Genetic Drift

Symbol mu

μ(x,t)\mu(x,t)
μ\mu

What this part means

mu 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

mu 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

where the first right-hand term carries the probability density along a deterministic drift μ(x,t)\mu(x,t) and the second spreads it by diffusion at rate D(x,t) [ 3 ] . Andrei Kolmogorov arrived at the identical equation independently in 1931, from pure probability theory, as the forward equation governing how the probability distribution of any continuous-time Markov process evolves [ 3 ] .…

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A function assigns an output to each allowed input. The expression f(x) means “apply f to x”.

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Sources cited in the surrounding passage

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