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...formed
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Or with a discrete scale parameter if preferred.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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...conditions
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The closing removes minima, leaving maxima intact. Since, in this simple
experiment, we search for maxima, this is a problem.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .