Results 141 to 150 of about 641,065 (281)

Positive solutions for a Riemann-Liouville-type impulsive fractional integral boundary value problem

open access: yesAIMS Mathematics
In this work, we investigate a Riemann-Liouville-type impulsive fractional integral boundary value problem. Using the fixed point index, we obtain two existence theorems on positive solutions under some conditions concerning the spectral radius of the ...
Keyu Zhang   +3 more
doaj   +1 more source

On isometries and on a theorem of Liouville

open access: yesMathematische Zeitschrift, 1958
Philip Hartman, Philip Hartman
openaire   +2 more sources

Liouville theorems for semilinear equations on the Heisenberg group

open access: bronze, 1997
Isabeau Birindelli   +2 more
openalex   +2 more sources

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