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Spectrum and V-Filtration - Variance of Spectral numbers

Claus Hertling conjectures that

variance(SN) <= (SNmax - SNmin) / 12 .

We compute

g(f) := mu(f) * ((SNmax - SNmin) - 12*variance(SN)) .

KL, 06/03 http://www.singular.uni-kl.de