Pólya-Ostrowski Group and Unit Index in Real Biquadratic Fields

Huda Naeem Hleeb Al-Jabbari, Abbas Maarefparvar

The Pólya-Ostrowski group of a Galois number field $K$, is the subgroup $Po(K)$ of the ideal class group $Cl(K)$ of $K$ generated by the classes of all the strongly ambiguous ideal…