In 1926, R. Nevanlinna showed that, for two distinct nonconstant meromorphic functions f and g on the complex plane C, they cannot have the same inverse images for five distinct values, and g is a special type of linear fractional transformation of f if they have the same inverse images counted with multiplicities for four distinct values [N]. Over the last few decades, there have been several results for generalizing the above theorem of Nevanlinna to the case of meromorphic mappings of C~n into the complex projective space P~N(C). We refer to the articles [Fu2], [Fu3], [A] and references therein for the development of related subjects.
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