According to the Libra blockchain technical paper: libra technical paper, on Page 21 Paragraph 1:
Because the mempool processes multiple transactions at a time, it can perform checks such as validating that a sequence of operations on the same address can all pay for gas that the admission control system cannot.
Does this mean the mempool could make the transactions parallel? If so, then how to make the sequence under the same account consistent?
Or it is just the same as Ethereum that only one transaction could be committed to the block in one time. After the block is confirmed in the chain, then the transaction with next nonce (sequence here) could be processed.
This part puzzled me a lot and what the truth of libra core implementation here?