VIEW-OBSTRUCTION PROBLEMS AND KRONECKERS THEOREM

In this paper we show how the quantitative forms of Kronecker's theorem in Diophantine approximations can be applied to investigate view-obstruction problems. In particular we answer a question in [Yong-Gao Chen, On a conjecture in Diophantine approximation, III, J. Number Theory 39 (1991), 91-103].Mathematics, AppliedMathematicsSCI(E)2ARTICLE113279-328412