%0 Journal Article %T Multiple Positive Solutions of a Nonlinear Four-Point Singular Boundary Value Problem with a -Laplacian Operator on Time Scales %A Hong Shihuang %J Boundary Value Problems %D 2009 %I Springer %X We present sufficient conditions for the existence of at least twin or triple positive solutions of a nonlinear four-point singular boundary value problem with a -Laplacian dynamic equation on a time scale. Our results are obtained via some new multiple fixed point theorems. %U http://www.boundaryvalueproblems.com/content/2009/103276