Relations Between a Topological Game and the $G_{\delta}$-diagonal   property
  We present a selection principle $S_1(\mathcal{O},\mathcal{H})$ that characterizes the $G_{\delta}$-diagonal property. We also present a topological game induced by this selection principle and we study the relations between this game and the $G_{\delta}$-property. Finally, we give some applications and examples. 
Leandro F. Aurichi and Dione A. Lara
math.GN