Research output: Contribution to journal › Article › peer-review
Polynomial Equivalence of the Problems Predicate Formulas Isomorphism and Graph Isomorphis. / Kosovskaya, T.M.; Kosovskii, N.N.
In: Vestnik St. Petersburg University: Mathematics, Vol. 52, No. 3, 09.2019, p. 286–292.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Polynomial Equivalence of the Problems Predicate Formulas Isomorphism and Graph Isomorphis
AU - Kosovskaya, T.M.
AU - Kosovskii, N.N.
N1 - Kosovskaya, T.M. & Kosovskii, N.N. Vestnik St.Petersb. Univ.Math. (2019) 52: 286. https://proxy.library.spbu.ru:2060/10.1134/S1063454119030105
PY - 2019/9
Y1 - 2019/9
N2 - The problem of isomorphism checking of two elementary conjunctions of predicate formulas is considered in this work. Such a problem appears while solving some Artificial Intelligence problems, admitting formalization by means of predicate calculus language. The exact definition of the concept of isomorphism of such formulas is given in this paper. However, isomorphic elementary conjunctions of predicate formulas are formulas that, with some substitution of variables instead of their arguments, coincide with the accuracy of the order of writing literals. Problems are described that, when solved, mean the necessity of testing formulas for isomorphism arises. Polynomial equivalence of this problem with the Graph Isomorphism (GI) problem is proved.
AB - The problem of isomorphism checking of two elementary conjunctions of predicate formulas is considered in this work. Such a problem appears while solving some Artificial Intelligence problems, admitting formalization by means of predicate calculus language. The exact definition of the concept of isomorphism of such formulas is given in this paper. However, isomorphic elementary conjunctions of predicate formulas are formulas that, with some substitution of variables instead of their arguments, coincide with the accuracy of the order of writing literals. Problems are described that, when solved, mean the necessity of testing formulas for isomorphism arises. Polynomial equivalence of this problem with the Graph Isomorphism (GI) problem is proved.
KW - GI-completeness
KW - graph isomorphism
KW - predicate formulas isomorphism
UR - https://link.springer.com/article/10.1134/S1063454119030105
UR - http://www.scopus.com/inward/record.url?scp=85071982220&partnerID=8YFLogxK
U2 - 10.1134/S1063454119030105
DO - 10.1134/S1063454119030105
M3 - Article
VL - 52
SP - 286
EP - 292
JO - Vestnik St. Petersburg University: Mathematics
JF - Vestnik St. Petersburg University: Mathematics
SN - 1063-4541
IS - 3
ER -
ID: 46130767