*Definition [#d7bd9508]
-A sequence {x_n} is said to p-converges to a point x in a space X if {x_n} is eventually in every [[pre-open]] set containing x.

*Reference [#xcfcf428]
-Nour T. M., ''Pre-unique sequential spaces.'' (English summary), Indian J. Pure Appl. Math. 32 (2001), no. 6, 797–800.