Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Helmke, Uwe"'
The paper develops a technique for solving a linear equation $Ax=b$ with a square and nonsingular matrix $A$, using a decentralized gradient algorithm. In the language of control theory, there are $n$ agents, each storing at time $t$ an $n$-vector, c
Externí odkaz:
http://arxiv.org/abs/1509.04538
Autor:
Schönlein, Michael, Helmke, Uwe
We investigate the task of controlling ensembles of initial and terminal state vectors of parameter-dependent linear systems by applying parameter-independent open loop controls. Necessary, as well as sufficient, conditions for ensemble controllabili
Externí odkaz:
http://arxiv.org/abs/1504.06167
This paper studies zeros of networked linear systems with time-invariant interconnection topology. While the characterization of zeros is given for both heterogeneous and homogeneous networks, homogeneous networks are explored in greater detail. In t
Externí odkaz:
http://arxiv.org/abs/1408.6889
The task of image restration is to find the spatial correspondence of two or more given images. In this paper we assume that the correspondence is given either by an Euclidean, or by an affine volume-preserving transformation. Since the registration
Externí odkaz:
http://arxiv.org/abs/1007.5160
Decoding of convolutional codes poses a significant challenge for coding theory. Classical methods, based on e.g. Viterbi decoding, suffer from being computationally expensive and are restricted therefore to codes of small complexity. Based on analog
Externí odkaz:
http://arxiv.org/abs/0909.0588
A general class of Newton algorithms on Gra{\ss}mann and Lagrange-Gra{\ss}mann manifolds is introduced, that depends on an arbitrary pair of local coordinates. Local quadratic convergence of the algorithm is shown under a suitable condition on the ch
Externí odkaz:
http://arxiv.org/abs/0709.2205
Publikováno v:
Lin. Multilin. Alg. 56 (2008) 3--26
This paper shows how C-numerical-range related new strucures may arise from practical problems in quantum control--and vice versa, how an understanding of these structures helps to tackle hot topics in quantum information. We start out with an overvi
Externí odkaz:
http://arxiv.org/abs/math-ph/0701035
This paper studies the problem of pole assignment for symmetric and Hamiltonian transfer functions. A necessary and sufficient condition for pole assignment by complex symmetric output feedback transformations is given. Moreover, in the case where th
Externí odkaz:
http://arxiv.org/abs/math/0511112
The paper is concerned with the problem of determining a complete set of invariants for output feedback. Using tools from geometric invariant theory it is shown that there exists a quasi-projective variety whose points parameterize the output feedbac
Externí odkaz:
http://arxiv.org/abs/math/0012054