Maletti, Andreas
[VerfasserIn];
Nász, Andreea-Teodora
[VerfasserIn];
Paul, Erik
[VerfasserIn]
;
Andreas Maletti and Andreea-Teodora Nász and Erik Paul
[MitwirkendeR]
Anmerkungen:
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Beschreibung:
The HOM-problem asks whether the image of a regular tree language under a given tree homomorphism is again regular. It was recently shown to be decidable by Godoy, Giménez, Ramos, and Àlvarez. In this paper, the ℕ-weighted version of this problem is considered and its decidability is proved. More precisely, it is decidable in polynomial time whether the image of a regular ℕ-weighted tree language under a nondeleting, nonerasing tree homomorphism is regular.