2 papers
math.CO2020
Zhang-Zhang Polynomials of Ribbons
Bing-Hau He, Chien-Pin Chou, Johanna Langner +1
We report a closed-form formula for the Zhang-Zhang polynomial (aka ZZ polynomial or Clar covering polynomial) of an important class of elementary pericondensed benzenoids $Rb\left…
math.CA2019
Proofs for certain Pi_{q}-conjectures of Gosper
Bing He
In 2001 W. Gosper introduced a constant Pi_{q} and conjectured without proofs many intriguing identities on this constant. In this paper we establish some modular equations of degr…