*Definition [#q58d064e]
-Let U be an initial universe set and E be a set of parameters. A [[soft set]] (F, E) is called a soft point if for each element e ∈ E, &ref(http://www.eaflux.com/imgtex/imgtex.fcgi?%5bres=100%5d%7b%5c%5b%20F%28e%29%5cneq%5cPhi%2c%5cmbox%7b%20and%20%7dF%28e'%29=%5cPhi%5cmbox%7b%20for%20all%20%7de'%5cin%20A-%5c%7be%5c%7d%20%5c%5d%7d%25.png);.

*Reference [#q83ef41f]
-J. Mahanta, P. K. Das  ,''On soft topological space via semiopen and semiclosed soft sets'', arXiv math.GN 1203.4133v1.