(anthropology) A group of people all descended from a common ancestor, whether real or fictitious, whether traceable through linear genealogies or untraceable; a clan or lineage.

(Internet) A simultaneous online chat between a group of people by means of a messaging application.

plural of group chat

Synonym of Dakota Formation

(algebraic topology) A free abelian group generated by all the k-dimensional oriented simplices of a given simplicial complex.

(algebraic topology) The quotient group of the kth cycle group modulo the kth boundary group (derived from the chain complex of, e.g., a given simplicial complex).

(algebraic topology) The image of the (k + 1)ᵗʰ boundary homomorphism (for a given chain complex).

(algebraic topology) The kernel of the kᵗʰ boundary homomorphism (of a given chain complex).

A social group that advocates and practices hate speech and/or hate crimes.

(geometry) A mathematical group that classifies two-dimensional repeating patterns based on their symmetries.