Analysis of a one-dimensional prescribed mean curvature equation with singular nonlinearity

Details Analysis of a one-dimensional prescribed mean curvature equation with singular nonlinearity Analysis of a one-dimensional prescribed mean curvature equation with singular nonlinearity

2012-01-26

arxiv.org/abs/1201.5432v3

Mathematics

Classical Analysis and ODEs

20 pages, 5 figures

Scientific paper

In this paper we analyze the classical solution set ({\lambda},u), for {\lambda}>0, of a one-dimensional prescribed mean curvature equation on the interval [-L,L]. It is shown that the solution set depends on the two parameters, {\lambda} and L, and undergoes two bifurcations. The first is a standard saddle node bifurcation, which happens for all L at {\lambda} = {\lambda}*(L). The second is a splitting bifurcation; specifically, there exists a value L* such that as L transitions from greater than or equal L* to less than L* the upper branch of the bifurcation diagram splits into two parts. In contrast, the solution set of the semilinear version of the prescribed mean curvature equation is independent of L and exhibits only a saddle node bifurcation. Therefore, as this analysis suggests, the splitting bifurcation is a byproduct of the mean curvature operator coupled with the singular nonlinearity.

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