Section UniformTopology_and_continuity.
Variable X:TopologicalSpace.
Variable Y:Type.
Variable d:Y->Y->R.
Variable y0:point_set X -> Y.
Hypothesis d_metric: metric d.
Hypothesis X_inh: inhabited (point_set X).

Lemma continuous_functions_at_point_closed_in_uniform_metric:
forall x0:point_set X,
closed (fun f:uniform_space d y0 => continuous_at (proj1_sig f) x0
(Y:=MetricTopology d d_metric))
(X:=UniformTopology d y0 d_metric X_inh).