Non-crystallographic tail-triangle C-groups of rank 4 and interlacing number 2

Mark L. Loyola, Nonie Elvin S. Leyrita, Ma. Louise Antonette N. De Las Penas

This work applies the modular reduction technique to the Coxeter group of rank 4 having a star diagram with labels 5, 3, and $k=3,4,5,\text{ or }6$. As moduli, we use the pri…