Before revision:  Trading volume authenticates its corresponding price, so there is mutual information and entanglement between price and volume. On the other hand, we are curious about scaling features of this entanglement and need to know how structures in different scales translate information.
After revision:  Trading volume authenticates its corresponding price, so there is mutual information and entanglement between price and trading volume. We are curious about scaling features of this entanglement and need to know how structures in different scales translate information.