Journal of Vegetation Science, Vol. 27, No. 6 (November 2016), pp. 1275-1287 (13 pages) Questions: Mechanisms of community assembly are increasingly explored by combining community and species trait ...

Given a decreasing sequence {aⁿ} of nonnegative terms, we prove that there exist subsequences {nk } of {n} such that ∑k=1∞nk+1−nkank and ∑n=1∞an have the same convergence. In particular, ∑n=1∞an ...