Let U be a relatively compact open subset of a harmonic space, and H(U) be the function space of all continuous functions on which are harmonic on U. We give a complete characterization of the H(U)-exposed subsets of.
This extends the results of [J. Lukeš, T.
Mocek, M. Smrčka, J.
Spurný, Choquet like sets in function spaces, Bull. Sci.
Math. 127 (2003) 397437].