Odd Khovanov homology is mutation invariant
Odd Khovanov homology is mutation invariant
We prove that odd Khovanov homology is mutation invariant over Z, and therefore that Khovanov homology is mutation invariant over Z/2Z.We also establish mutation invariance for the entire Ozsváth-Szabó spectral sequence from reduced Khovanov homology to the Heegaard Floer homology of the branched double-cover.