Let X be a Banach space,(X,τ) be a locally convex linear topological space,C a τ-sequence compact convex subset of X,and S an asymptotically nonexpansive type semigroups from C onto itself,this paper gives the ergodic theorem of the almost-orbits for asymptotically nonexpansive type semigroups in Banach space X.

If the dimension d =1, then the total occupation time is infinite, and meanwhile an ergodic theorem is given.

Under the locally uniform τ-Opial condition,using product topological net,a new convergence condition of X with locally uniform τ-Opial condition is obtained, and give the ergodic theorem and τ-convergence theorem of the almost-orbits for asympotically nonexpansive typesemigroups in Banach space X are given.

The mean ergodic theorems for square sequence with random weights is obtained by using the method of Fourier analysis and the symmetrization as well as Gaussian randomization.

Let X be a Banach space, (X,τ) a local convex linear topological space, C a τ-sequence compact convex subset of X, and T an asymptotically nonexpansive mapping with the property (Γ) from C to itself, we give the ergodic convergence theorem for asymptotically nonexpansive mapping under uniformly τ-opial condition.