Existential and Positive Theories of Equations in Graph Products
Existential and Positive Theories of Equations in Graph Products
复制标题
图积方程的存在理论和实证理论
DOI:
10.1007/s00224-003-1110-x
复制
发表时间:
2002
影响因子:
0.5
通讯作者:
Markus Lohrey
中科院分区:
文献类型:
--
作者:
V. Diekert;Markus Lohrey
Abstract
We prove that the existential theory of equations
with normalized rational constraints in
a fixed graph product of finite monoids, free monoids, and
free groups is PSPACE-complete.
Under certain restrictions this result also holds
if the graph product is part of the input.
As the second main result we prove that the positive theory of equations
with recognizable constraints
in graph products of finite and free groups is
decidable.