REPRESENTABLE TREE SERIES
Symeon Bozapalidis · Fundamenta Informaticae · 1994
We investigate tree series coming from the representations of the free monoid PΣ of trees of the form σ(t1 ,..., ti−1 , x, ti+1 ,..., tn ), into the matrices with coefficients in a semiring K. Tree length, branch enumeration, terminal tree enumeratio