*Definition [#q78d52a4]
A subset B of a topological space X is called [[sequentially α-compact]] if every sequence in B has a subsequence [[α-convergent]] to some point in B.

*Reference [#h7aac52f]
S.P. Arya and M.P. Bhamini, ''A note on semi-US spaces'', Ranchi Uni. Maths. Jour. Vol 13 (1982), 60-69.
G.B. Navalagi, ''Definition bank in general topology'', http://at.yorku.ca/i/d/e/b/75.htm