The simultaneous optimization of multiple queries submitted to adatabase system may lead to substantial savings over the current approach ofoptimizing each query separately. Isolating common subexpressions in multiplequeries and treating their execution as a sharable resource are...

The paper develops a version of Pontryagin's maximum principle for optimal control problems with monotonicity constraints on control variables. Whereas the literature handles such constraints by imposing an assumption of piecewise smoothness on the control variable and treating the slope of this...