Problem:
Suppose the forward rate satisfies f(0, T1, T2) > [B(0,T1) / B(0,T2)] - 1. Write down, showing all details, an arbitrage strategy that yields a risk-less profit of (1 + f(0, T1, T2)) - B(0,T1) / B(0,T2) dollars.
Explain comprehensively and show all workings.