I study computer science and I can't understand what is "miner" in real. what "math problems" the miner try resolve? generate a hash code is a simple work or not?
sorry for the english tratudor
tanks
This is best answer perhaps :
https://en.bitcoin.it/wiki/Mining.
You can search WIKI in your language..
Anyway yes - for a computer solving SHA256 is a quite big job. That's why such Hashrates are needed.