Equation 50 · Part 2 · The Valley of Stability Is a Fitness Landscape
Symbol Z
What this part means
Z 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
Z 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 Z→Article meaning
The passage around this formula
Stated most narrowly, the part of evolutionary theory’s formal apparatus that maps onto the chart of nuclides without qualification is this: a scalar objective function defined over a discrete state space, together with a rule for what counts as a local move, together with the observation that a system occupying a given state will, given the opportunity, take a move that increases the objective. Binding energy per nucleon is the objective; the (N,Z) lattice is the state space; single beta decay, or the small number of other elementary transitions available at a given point, is the local move. An adaptive walk under strong selection and weak mutation — a population that reliably takes the…
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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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Sources cited in the article section
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