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- Y W I L L I A M Wang, S Bernstein, Vi-B, V Vizb, T R L
- 2004

In this paper we consid~r the des~gn of robust controllers with closed-loop poles constrained to lie in specified regions in the left half complex plane The paper focuses In part~cular on hyperbolic and horizontal strip regions The hyperbolic region places a lower bound on the damping ratio whereas the horizontal strip region places an upper bound on the… (More)

We consider a left-linear analogue to the classical Riemann problem: D a u = 0 in R n \Γ u + = H(x)u − + h(x) on Γ |u(x)| = O(|x| n 2 −1) as |x| → ∞. For this purpose, we state a Borel-Pompeiu formula for the disturbed Dirac operator D a = D +a with a paravector a and some functiontheoretical results. We reformulate the Riemann problem as an integral… (More)

We consider a one-dimensional Radon transform on the group SO(3) which is motivated by texture goniometry. In particular we will derive several inversion formulae and compare them with the inversion of the one-dimensional spherical Radon transform on S 3 for even functions. Acknowledgement The support by Deutsche Forschungsgemeinschaft is greatly… (More)

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