Geodesic
Exact Neumann boundary controllability for second order hyperbolic equations
Colloquium Mathematicum, Tome 76 (1998) no. 1, pp. 117-142
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Using HUM, we study the problem of exact controllability with Neumann boundary conditions for second order hyperbolic equations. We prove that these systems are exactly controllable for all initial states in $L^2({\mit\Omega})\times (H^1({\mit\Omega}))'$ and we derive estimates for the control time T.
DOI : 10.4064/cm-76-1-117-142
Keywords: Neumann boundary condition, HUM, exact controllability, second order hyperbolic equation 
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Weijiu Liu; Graham Williams. Exact Neumann boundary controllability for second order hyperbolic equations. Colloquium Mathematicum, Tome 76 (1998) no. 1, pp. 117-142. doi: 10.4064/cm-76-1-117-142

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