Toda's chi-independence conjecture for BPS perverse sheaves
Toda's chi-independence conjecture. For any γ∈BS(α)\gamma\in B_S(\alpha)γ∈BS(α), the invariant Φ(α+nδ)\Phi(\alpha+n\delta)Φ(α+nδ) is independent of n∈Zn\in\mathbb{Z}n∈Z.