Exact Results in Quantum Theory

The classical Picard theorem (A meromorphic function that misses three values must reduce to a constant) can be regarded as a result about differential operators. We introduce the recent rejuvenation of the classical result to include various difference operators related to special functions. We shall deduce these new results as consequences of relevant Nevanlinna theories. We shall also discuss potential implications and what we still do not understand of these theories.
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