# spectralSequence(FilteredComplex) -- construct a spectral sequence from a filtered complex

## Description

Returns the spectral sequence associated to the filtered complex.

 i1 : A = QQ[x,y]; i2 : C = koszul vars A 1 2 1 o2 = A <-- A <-- A 0 1 2 o2 : ChainComplex i3 : K = filteredComplex C; i4 : E = spectralSequence K o4 = E o4 : SpectralSequence