Chalker–Mehlig conjecture. (i) For any two points z1,z2z_1,z_2z1,z2 such that ∣z1∣<1|z_1|<1∣z1∣<1, ∣z2∣<1|z_2|<1∣z2∣<1 and ∣z1−z2∣>0|z_1-z_2|>0∣z1−z2∣>0,
