- (of a graph) samhengisþáttur, þáttur
= connected component 1, maximal connected subgraph - (of a product) þáttur
- (of a topological space) samhengisþáttur, þáttur
= connected component 2 - (of a vector) liður, þáttur
= component vector - (of an $n$-tuple) hnit, stak, stuðull