U. Kaufmann

activity

20172020

most citedUniqueness and sign properties of minimizers in a quasilinear indefinite problem

3 citations · 6 across the 5 of their papers we have counts for

collaborators

Showing 2017Show all

2 papers · 1 filter

math.AP2017

Positive solutions of an elliptic Neumann problem with a sublinear indefinite nonlinearity

Uriel Kaufmann, Humberto Ramos Quoirin, Kenichiro Umezu

Let $Ω \subset R^{N}$ ( $N \geq 1$ ) be a bounded and smooth domain and $a : Ω \to R$ be a sign-changing weight satisfying $\int_{Ω} a < 0$ . We prove the existence of a…

math.AP2017★ 1 cited

Positive solutions of indefinite semipositone problems via sub-super solutions

Uriel Kaufmann, Humberto Ramos Quoirin

Let $Ω \subset R^{N}$ , $N \geq 1$ , be a smooth bounded domain, and let $m : Ω \to R$ be a possibly sign-changing function. We investigate the existence of positiv…