Definition
- A topological space (X, τ) is called a US space if every convergent sequence has exactly one limit to which it converges.
Property
Reference
- Wilansky Albert, Between T_1 and T_2., Amer. Math. Monthly 74 (1967) 261-266.
- Nour T. M., Pre-unique sequential spaces. (English summary), Indian J. Pure Appl. Math. 32 (2001), no. 6, 797–800.