With the recent halving of block rewards, the incentive will be lower than previous for miner. On the other hand, the cost for them will still be same which may not be profitable for a while (I'm not sure about this). If it is true, is it possible that some miners will just leave mining for a while until they get back in a equilibrium or in profit? What fo you think?
It is very possible and it has been happening.
The cost may rise or fall. The main cost there is the regular or non-stop electricity that miners need. But that is not something they cannot do anything about. They have certain options to counter it. But as to whether they will continue surviving with a profit despite the just implemented inflation of rewards, they will see in the next month or two.
what you mean may rise or fall ? electric cost had never been lowered but its possible that they will be highered the longer the days have been running because the cost for materials and labor are also getting expensive .
still there are places that electricity are not really expensive so i think miners on these area wont care too much about the halving . my question is that how do we know what the number of miners are decreasing or not , is there a tool to detect that ?