Research output: Contribution to journal › Article › peer-review
Processes and Structures on Approximation Spaces. / Stukachev, A. I.
In: Algebra and Logic, Vol. 56, No. 1, 01.03.2017, p. 63-74.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Processes and Structures on Approximation Spaces
AU - Stukachev, A. I.
PY - 2017/3/1
Y1 - 2017/3/1
N2 - We introduce the concept of a computability component on an admissible set and consider minimal and maximal computability components on hereditarily finite superstructures as well as jumps corresponding to these components. It is shown that the field of real numbers Σ-reduces to jumps of the maximal computability component on the least admissible set ℍF(∅). Thus we obtain a result that, in terms of Σ-reducibility, connects real numbers, conceived of as a structure, with real numbers, conceived of as an approximation space. Also we formulate a series of natural open questions.
AB - We introduce the concept of a computability component on an admissible set and consider minimal and maximal computability components on hereditarily finite superstructures as well as jumps corresponding to these components. It is shown that the field of real numbers Σ-reduces to jumps of the maximal computability component on the least admissible set ℍF(∅). Thus we obtain a result that, in terms of Σ-reducibility, connects real numbers, conceived of as a structure, with real numbers, conceived of as an approximation space. Also we formulate a series of natural open questions.
KW - admissible sets
KW - approximation spaces
KW - computability theory
KW - computable analysis
KW - constructive models
KW - hyperarithmetical computability
KW - REDUCIBILITY
KW - PRESENTABILITY
UR - http://www.scopus.com/inward/record.url?scp=85018773802&partnerID=8YFLogxK
U2 - 10.1007/s10469-017-9426-9
DO - 10.1007/s10469-017-9426-9
M3 - Article
AN - SCOPUS:85018773802
VL - 56
SP - 63
EP - 74
JO - Algebra and Logic
JF - Algebra and Logic
SN - 0002-5232
IS - 1
ER -
ID: 10258019