Definition
- Let (X, τ, μ) be a bitopological space. A family from τ∪μ covering the set X is called τμ-open covering.
Reference
- Adnadjević, D.(Adnadzhevich, D.), Bicompactness of bitopological spaces., (English)[J] J. Sov. Math. 37, 1059-1063 (1987).