The paper deals with the problem of finding a curve, going through the interior of the domain $\Omega$, accross which the flux $\partial u/\partial n$, where $u$ is the solution of a mixed elliptic boundary value problem solved in $\Omega$, attains its maximum.
@article{104400,
author = {Jaroslav Haslinger and V\'aclav Hor\'ak},
title = {On identification of critical curves},
journal = {Applications of Mathematics},
volume = {35},
year = {1990},
pages = {169-177},
zbl = {0721.49005},
mrnumber = {1052737},
language = {en},
url = {http://dml.mathdoc.fr/item/104400}
}
Haslinger, Jaroslav; Horák, Václav. On identification of critical curves. Applications of Mathematics, Tome 35 (1990) pp. 169-177. http://gdmltest.u-ga.fr/item/104400/
Les méthodes directes en théorie des equations elliptiques, Academia, Praha, 1967. (1967) | MR 0227584
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