Research output: Contribution to journal › Article › peer-review
Fields of Algebraic Numbers Computable in Polynomial Time. II. / Alaev, P. E.; Selivanov, V. L.
In: Algebra and Logic, Vol. 60, No. 6, 01.01.2022, p. 349-359.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Fields of Algebraic Numbers Computable in Polynomial Time. II
AU - Alaev, P. E.
AU - Selivanov, V. L.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - This paper is a continuation of [Algebra and Logic, 58, No. 6, 447-469 (2019)] where we constructed polynomial-time presentations for the field of complex algebraic numbers and for the ordered field of real algebraic numbers. Here we discuss other known natural presentations of such structures. It is shown that all these presentations are equivalent to each other and prove a theorem which explains why this is so. While analyzing the presentations mentioned, we introduce the notion of a quotient structure. It is shown that the question whether a polynomial-time computable quotient structure is equivalent to an ordinary one is almost equivalent to the P = NP problem. Conditions are found under which the answer is positive.
AB - This paper is a continuation of [Algebra and Logic, 58, No. 6, 447-469 (2019)] where we constructed polynomial-time presentations for the field of complex algebraic numbers and for the ordered field of real algebraic numbers. Here we discuss other known natural presentations of such structures. It is shown that all these presentations are equivalent to each other and prove a theorem which explains why this is so. While analyzing the presentations mentioned, we introduce the notion of a quotient structure. It is shown that the question whether a polynomial-time computable quotient structure is equivalent to an ordinary one is almost equivalent to the P = NP problem. Conditions are found under which the answer is positive.
KW - equivalence of polynomial-time computable structures
KW - field of algebraic numbers
KW - polynomial-time computable structures
UR - http://www.scopus.com/inward/record.url?scp=85129422870&partnerID=8YFLogxK
U2 - 10.1007/s10469-022-09661-3
DO - 10.1007/s10469-022-09661-3
M3 - Article
AN - SCOPUS:85129422870
VL - 60
SP - 349
EP - 359
JO - Algebra and Logic
JF - Algebra and Logic
SN - 0002-5232
IS - 6
ER -
ID: 126984768