[Retracted] A Comprehensive Survey on Sharding in Blockchains

Table 4

Notation definition.

No.	Notation	Definition
1		Total amount of mining power
2		Block
3		Hash function
4		Block header
5	Sig	Signature
6	Tx	Transaction
7		Mining factor of shards
8		Total number of validators
9		Number of shards
10		Size of each shard
11		Random seed
12		Epoch
13		Block period
14		Block height
15		Improving factor
16		Blockchain with a block height of within a single shard
17		Header chain with a block height of within a single shard