Summary of the symbols in the Ethereum Yellow Paper.
Can be used as a reference and support for building and Ethereum client.
| Symbol | Symbol name (in Math or plain english) | Meaning in the yellow paper |
|---|---|---|
 |
mu | Machine state |
 |
sigma | World State |
Jean Cvllr CJ42
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| { | |
| "author" : "Jean Cavallera", | |
| "details" : "All function calls are currently implemented without side effects", | |
| "methods" : | |
| { | |
| "calculateHypothenuse(uint256,uint256)" : | |
| { | |
| "details" : "Not working as it returns integers and not float", | |
| "params" : | |
| { |
CJ42
/ .deps...npm...@openzeppelin...contracts...utils...cryptography...ECDSA.sol
Created
August 27, 2021 10:53
Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.8.4+commit.c7e474f2.js&optimize=false&runs=200&gist=
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| // SPDX-License-Identifier: MIT | |
| pragma solidity ^0.8.0; | |
| /** | |
| * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. | |
| * | |
| * These functions can be used to verify that a message was signed by the holder | |
| * of the private keys of a given address. | |
| */ |
CJ42
/ Ethereum-Yellow-Paper-Symbols.md
Last active
March 16, 2023 15:54
Ethereum Yellow Paper - Symbols Summary
CJ42
/ Sablier.sol
Created
April 12, 2022 05:13
Brief example from Sablier protocol to show one line if statements in Solidity
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| pragma solidity =0.5.17; | |
| // import statements ... | |
| /** | |
| * @title Sablier | |
| * @author Sablier | |
| * @notice Money streaming. | |
| */ | |
| contract Sablier is ISablier, ReentrancyGuard, CarefulMath { |
CJ42
/ Sablier.sol
Created
April 12, 2022 06:13
Example from Sablier to explain external calls with if statements
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| pragma solidity =0.5.17; | |
| // import statements (omitted for brievity) ... | |
| /** | |
| * @title Sablier | |
| * @author Sablier | |
| * @notice Money streaming. | |
| */ | |
| contract Sablier is ISablier, ReentrancyGuard, CarefulMath { |
CJ42
/ Sablier.sol
Created
April 12, 2022 06:15
Practical Example from Sablier to explain return inside if statement
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| pragma solidity =0.5.17; | |
| // import statements (omitted for brievity) ... | |
| /** | |
| * @title Sablier | |
| * @author Sablier | |
| * @notice Money streaming. | |
| */ | |
| contract Sablier is ISablier, ReentrancyGuard, CarefulMath { |
CJ42
/ LSP6KeyManagerCore.sol
Last active
April 27, 2022 23:44
code from the KeyManager contract from LUKSO to explain omitting parentheses in if statements
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| // SPDX-License-Identifier: Apache-2.0 | |
| pragma solidity ^0.8.6; | |
| // imports and errors declarations omitted for brievity ... | |
| /** | |
| * @title Core implementation of a contract acting as a controller of an ERC725 Account, using permissions stored in the ERC725Y storage | |
| * @author Fabian Vogelsteller, Jean Cavallera | |
| * @dev all the permissions can be set on the ERC725 Account using `setData(...)` with the keys constants below | |
| */ |
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| pragma solidity ^0.8.0; | |
| /// THIS IS STILL A NEGATIVE EXAMPLE! DO NOT USE! | |
| contract Voting { | |
| mapping(address => uint) voteWeight; | |
| address[] yesVotes; | |
| uint requiredWeight; |
CJ42
/ HexString.sol
Created
April 14, 2022 19:43
function `toString` as an example of how `while` loops are used in Solidity
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| // SPDX-License-Identifier: GPL-2.0-or-later | |
| pragma solidity ^0.7.6; | |
| /// @title HexStrings | |
| /// Based on https://github.com/OpenZeppelin/openzeppelin-contracts/blob/8dd744fc1843d285c38e54e9d439dea7f6b93495/contracts/utils/Strings.sol | |
| library HexStrings { | |
| bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; | |
| /// @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. |
CJ42
/ Bytes-Uint-equivalence.md
Last active
February 13, 2026 01:46
Solidity Table that summarizes the equivalent number of bits / bytes to convert between signed / unsigned integer (`intN` / `uintN`) and `bytesN`
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