NaN rank values for objects after agent's full power transfer

[cyborgshead]

We are computing a token-weighted page rank: cyber~Rank. All the cyberlinks are stored permanently with the account that made these cyberlinks. The aggregation of all weights between given objects (CIDs), is the sum of the current account balances, which made the cyberlinks between these objects. Transfer of tokens affects weights of the produced cyberlinks of an agent. Therefore, rank values - change.

The case I found, was when an agent (subject) transfers their full balance from their account to another account, and there is only one cyberlink between two CIDs (made only by this agent). This results in zero aggregate sum of weight and produces a NaN (Not-a-Number) value when division happens inside the rank algorithm. The issue is in both, GPU (production) and CPU (local development, cross-testing) rank code.