%0 Journal Article %T Fractional variational calculus of variable order %A Tatiana Odzijewicz %A Agnieszka B. Malinowska %A Delfim F. M. Torres %J Mathematics %D 2011 %I arXiv %R 10.1007/978-3-0348-0516-2_16 %X We study the fundamental problem of the calculus of variations with variable order fractional operators. Fractional integrals are considered in the sense of Riemann-Liouville while derivatives are of Caputo type. %U http://arxiv.org/abs/1110.4141v2