We prove an existence and multiplicity result for solutions of a nonlinear Urysohn type equation (2.14) by use of the Nielsen and degree theory in an annulus in the function space.
@article{bwmeta1.element.bwnjournal-article-bcpv49i1p9bwm, author = {Borisovich, Andrei and Kucharski, Zygfryd and Marzantowicz, Wac\l aw}, title = {A multiplicity result for a system of real integral equations by use of the Nielsen number}, journal = {Banach Center Publications}, volume = {50}, year = {1999}, pages = {9-18}, zbl = {0945.45003}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-bcpv49i1p9bwm} }
Borisovich, Andrei; Kucharski, Zygfryd; Marzantowicz, Wacław. A multiplicity result for a system of real integral equations by use of the Nielsen number. Banach Center Publications, Tome 50 (1999) pp. 9-18. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-bcpv49i1p9bwm/
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