Results 91 to 100 of about 145 (131)

Infinite semipositone problems with indefinite weight and asymptotically linear growth forcing-terms

Electronic Journal of Differential Equations, 2013
In this work, we study the existence of positive solutions to the singular problem $$displaylines{ -Delta_{p}u = lambda m(x)f(u)-u^{-alpha} quad hbox{in }Omega,cr u = 0 quad hbox{on }partial Omega, }$$ where $lambda$ is positive parameter, $Omega $
Ghasem A. Afrouzi, Saleh Shakeri
doaj  

Differential equations of divergence form in Musielak–Sobolev spaces and a sub-supersolution method

Journal of Mathematical Analysis and Applications, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Existence of three solutions for a two-point singular boundary-value problem with an unbounded weight

Electronic Journal of Differential Equations, 2016
We show the existence of three solution for the singular boundary-value problem $$\displaylines{ -z'' = h(t) \frac{f(z)}{z^\beta} \quad \text{in } (0,1) ,\cr z(t)> 0 \quad \text{in } (0,1),\cr z(0)= z(1)=0 , }$$ where $ 0 < \beta 0$ and ...
Dhany Rajendran, Eunkyung Ko, Ratnasingham Shivaji   +2 more
doaj  

Propagation of Epidemics Along Lines with Fast Diffusion. [PDF]

Bull Math Biol, 2020
Berestycki H, Roquejoffre JM, Rossi L.
europepmc   +1 more source

Oscillatory Carreau flows in straight channels. [PDF]

R Soc Open Sci, 2020
Tabakova S, Kutev N, Radev S.
europepmc   +1 more source

Combined effects of critical Hardy-Sobolev exponent and singular nonlinearities in nonlocal problems with variable weights

Electronic Journal of Differential Equations
This article studies a fractional elliptic equation that involves a critical Hardy-Sobolev nonlinearity along with a singular term, $$\displaylines{ (-\Delta_p)^s u = \lambda f(x) u^{-\gamma} \pm \frac{g(x)|u|^{p_s^*(t)-2}u}{|x|^t} \quad\text{in ...
Sarah Almutairi, Kamel Saoudi
doaj  

Sub-supersolution method in variational inequalities with multivalued operators given by integrals

Rocky Mountain Journal of Mathematics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A free boundary approach to shape optimization problems. [PDF]

Philos Trans A Math Phys Eng Sci, 2015
Bucur D, Velichkov B.
europepmc   +1 more source

A non-local free boundary problem arising in a theory of financial bubbles. [PDF]

Philos Trans A Math Phys Eng Sci, 2014
Berestycki H, Monneau R, Scheinkman JA.
europepmc   +1 more source

Some general concepts of sub- and supersolutions for nonlinear elliptic problems

, 2006
We propose general and unified concepts of sub- supersolutions for boundary value problems that encompass several types of boundary conditions for nonlinear elliptic equations and variational inequalities. Various, by now classical, sub- and supersolution existence and comparison results are covered by the general theory presented here.
Le, Vy Khoi, Schmitt, Klaus
openaire   +1 more source