Sufficient condition for the coherent control ofn-qubit systems

a sufficient condition for null controllability of nonlinear control systems

classical control methods such as pontryagin maximum principle and bang-bang principle and other methods are not usually useful for solving opti-mal control systems (ocs) specially optimal control of nonlinear systems (ocns). in this paper, we introduce a new approach for solving ocns by using some combination of atomic measures. we define a criterion for controllability of lumped nonlinear con...

A Sharp Sufficient Condition for Sparsity Pattern Recovery

Sufficient number of linear and noisy measurements for exact and approximate sparsity pattern/support set recovery in the high dimensional setting is derived. Although this problem as been addressed in the recent literature, there is still considerable gaps between those results and the exact limits of the perfect support set recovery. To reduce this gap, in this paper, the sufficient con...

A sufficient condition for pseudointegrable systems with weak mixing property

We present a sufficient condition that a pseudointegrable system has weak mixing property. The result is derived from Veech’s weak mixing theorem for interval exhange [Veech, W.A. Amer.J.Math. 106, 1331 (1984)]. We also present an example whose weak mixing property can be proved by the result.

A necessary and sufficient minimality condition for uncertain systems

A necessary and sufficient condition is given for the exact reduction of systems modeled by linear fractional transformations (LFT’s) on structured operator sets. This condition is based on the existence of a rank-deficient solution to either of a pair of linear matrix inequalities which generalize Lyapunov equations; the notion of Gramians is thus also generalized to uncertain systems, as well...

Border Disease Control Checkpoints: Are They Sufficient for Disease Control? The Present Situation in Thailand