Spelling Rules for the Monster/Semple Tower
  We further study the incidence relations that arise from the various subtowers, known as Baby Monster, which exist within the $\mathbb{R}^{3}$-Monster Tower. This allows us to complete the $RVT$ class spelling rules. We also present a method of calculating the various Baby Monster that appear within the Monster Tower. 
Alex L. Castro and Wyatt C. Howard
math.DG