How does hashed inverted page table work?
From your picture, one definitely see a hash table collision solution. If one carefully examine it, will see that the table uses itself to solve the collision, that is Open Addressing.

In open addressing, the collision can be resolved by many methods;


Linear Probing
Quadratic Probing
Double hashing.


It might be Double Hashing or Quadratic Probing but the information is not enough to resolve.