An example concerning the topological character of the zero-set of a harmonic function.
Szulkin, Andrzej
Mathematica Scandinavica, Tome 43 (1978), p. 60-62 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1978-01-01
EUDML-ID : urn:eudml:doc:166602 
@article{GDZPPN002355132,
     title = {An example concerning the topological character of the zero-set of a harmonic function.},
     journal = {Mathematica Scandinavica},
     volume = {43},
     year = {1978},
     pages = {60-62},
     zbl = {0402.31007},
     url = {http://dml.mathdoc.fr/item/GDZPPN002355132}
}

Szulkin, Andrzej. An example concerning the topological character of the zero-set of a harmonic function.. Mathematica Scandinavica, Tome 43 (1978) pp. 60-62. http://gdmltest.u-ga.fr/item/GDZPPN002355132/