The affix ṭhañ (+\/- ika) comes in the sense of 'known therein' after the words loka and sarvaloka , in the 7th case in construction.,
Thus लोके विदितः = लौकिकः, सार्वलौकिकः ॥ The irregular Vriddhi of both members takes place by 7.3.20.,
लोक-सर्वलोकाट् ठञ्
Adhyāya 5 · Pāda 1 · Rule 44