Complex sentence: In mathematics, in the field of homological algebra, the Grothendieck spectral sequence is a spectral sequence that computes the derived functors of the composition of two functors G\\ circ F, from knowledge of the derived functors of "F" and "G".
Split into simpler sentences: In mathematics, in the field of homological algebra, the Grothendieck spectral sequence is a kind of spectral sequence. More specifically, it allows one to compute the derived functors of the composition of two functors G\\ circ F, from knowledge of the derived functors of "F" and "G".