Equation 15 · Part 1 · Einstein's Random Walk and the Mathematics of Genetic Drift
Symbol D
What this part means
the governed by a single constant.
Its job in the formula
D is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol D→Article meaning
Where the article explains it
The Random Walk Gets a General Law Einstein’s equation described one physical system: particles buffeted by a fluid held at a fixed temperature, governed by a single constant D .
The passage around this formula
where the first right-hand term carries the probability density along a deterministic drift 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 ] . Kolmogorov’s work also produced a companion equation, run…
Learn the underlying idea
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
These citations provide research context; check each source for the exact claim it supports.