ABSTRACT
The value f (a) of a density distribution function f at a point a expresses a growth speed of the cumulative distribution function F(x) = ∫ x−∞ f (z)dz at this point. Here, the functions describe the mass size distribution of TSP: f presented in a chart is a density function for the cumulative function F expressing PMx mass contribution to TSP. Let a be the diameter such that f assumes local maximum (mode) f (a) at a and 0 <ε is a small real number. Then, for any b in some neighbourhood of a, F(a + ε) − F(a − ε) is not less than F(b + ε)−F(b−ε).This means that PM(a+ε)−(a−ε) is such a particle fraction that its mass contribution F(a + ε) − F(a − ε) to TSP is greater than the mass contribution F(b + ε) − F(b − ε) of PM(b+ε)−(b−ε).
