In computational complexity theory, L/poly is the complexity class of logarithmic space machines with a polynomial amount of advice. L/poly is a non-uniform logarithmic space class, analogous to the non-uniform polynomial time class P/poly. In 1979, Aleliunas et al. showed that symmetric logspace is contained in L/poly. However, this result was superseded by Omer Reingold's result that SL collapses to uniform logspace. BPL is contained in L/poly, which is a variant of Adleman's theorem.