Nuclear Science and Engineering / Volume 47 / Number 2 / February 1972 / Pages 238-241
Technical Note / dx.doi.org/10.13182/NSE72-A22404
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The methods of semigroup theory are extended and applied to the space-time reactor dynamics equations. The extension allows one to obtain an upper bound on the maximum value of the state variables as well as a stability criteria based on the L∞ norm. Several important questions relating to obtaining bounds on the linear operators of reactor theory are answered. The importance of considering the L∞ or max norm is discussed and the main results are applied to an illustrative example.