Set Membership

Definition ∞ Set membership pertains to the condition of an element belonging to a defined collection or group. In cryptographic contexts, this can relate to verifying if an individual or entity is part of an authorized list or exclusion list, often utilized in privacy-preserving or access control mechanisms. It confirms an item’s inclusion within a specified set.
Context ∞ Discussions on set membership in digital assets often concern privacy technologies, decentralized identity systems, and access control for permissioned blockchains. The ability to prove membership in a set without revealing one’s full identity is a key area of innovation.