ERC-721 is an Ethereum token standard that defines rules for creating non-fungible tokens (NFTs). Each ERC-721 token is unique and represents ownership of a specific asset, making the standard well suited for representing distinct digital assets such as art, collectibles, or in-game items.

ERC-721

ERC-1155 is a multi-token standard on the Ethereum network, proposed in 2018. It is designed to allow the creation of both fungible and non-fungible tokens within a single smart contract, providing a flexible standard for issuing a wide range of tokens on Ethereum.

ERC-1155

ERC-1126

- [erc proposals](https://eips.ethereum.org/erc)

List of ERC Ethereum  Improvements Proposals

An ERC (Ethereum Request for Comment) is a standards-track Ethereum Improvement Proposal category for technical specifications used by applications in the Ethereum ecosystem, including token standards. ERC-721 and ERC-1155 are examples of ERC standards.

University of Michigan - Ann Arbor

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This EIP type is the most common,  they describe about changes that affect the Ethereum implementations such as **Network Protocol**,  **rules of block transactions**, **compatibility applications**. 
For now, this type of EIP is divided in four subcategories.
- Core.
- Networking.
- Interface.
- ERC.

EIP (Standard)

As its name says, is a EIP for the core technology of Ethereum, Ethereum Network Protocol, Block, Transactions and Standard for applications. 
Its main goals is to improve the interoperability of the applications and maintain the stability of the network.

Core Ethereum Improvement Proposal

This proposals are aimed to improve **Ethereum network aspects**, such as  efficiency, speed of transactions, cost of transactions, Minting process, Ether Burning Process, security enhancing etc.

Networking Ethereum Improvement Proposal

This propose a new standard for a specific type of interface (**collection of function signatures from a smart contract**), which can be adopted by other contracts in the Ethereum ecosystem. By proposing new interface standards through EIPs, developers can help to create a more standardized and interoperable ecosystem for smart contracts on the Ethereum blockchain.

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