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math.SP2015★ 1 cited
Green Operators of Networks with a new vertex
A. Carmona, A. M. Encinas, S. Gago +1
Any elliptic operator defines an automorphism on the orthogonal subspace to the eigenfunctions associated with the lowest eigenvalue, whose inverse is the orthogonal Green operator…
math.CA2015★ 2 cited
The inverse matrix of some circulant matrices
A. Carmona, A. M. Encinas, S. Gago +2
We present here necessary and sufficient conditions for the invertibility of circulant and symmetric matrices that depend on three parameters and moreover, we explicitly compute th…