 The royal prerogative has been called " a notoriously difficult concept to define adequately " , but whether a particular type of prerogative power exists is a matter of common law to be decided by the courts as the final arbiter . A prominent constitutional theorist , A. V. Dicey , proposed in the nineteenth century that : 
 The royal prerogative <a href='been_done' title='1'><mark>has</mark></a> been called " a notoriously difficult concept to define adequately " , but whether a particular type of prerogative power <a href='uninflect' title='2'><mark>exists</mark></a> <a href='drop_aux' title='3'><mark>is</mark></a>a matter of common law to be decided by the courts as the final arbiter . A prominent constitutional theorist , A. V. Dicey , proposed in the nineteenth century that : 
The royal prerogative done been called " a notoriously difficult concept to define adequately " , but whether a particular type of prerogative power exist a matter of common law to be decided by the courts as the final arbiter . A prominent constitutional theorist , A. V. Dicey , proposed in da nineteenth century that :