Computably compact metric spaces

RG Downey, AG Melnikov - Bulletin of Symbolic Logic, 2023 - cambridge.org
We give a systematic technical exposition of the foundations of the theory of computably
compact metric spaces. We discover several new characterizations of computable …

[PDF][PDF] Effectively compact spaces

R Downey, AG Melnikov - Preprint, 2022 - homepages.ecs.vuw.ac.nz
We give a systematic technical exposition of the foundations of the theory of effectively
compact metric spaces. We discover several new characterizations of effective compactness …

Computational complexity of classical solutions of partial differential equations

S Selivanova - Conference on Computability in Europe, 2022 - Springer
This paper provides a brief survey of recent achievements in characterizing computational
complexity of partial differential equations (PDEs), as well as computing solutions with …

Computably and punctually universal spaces

R Bagaviev, II Batyrshin, N Bazhenov… - Annals of Pure and …, 2025 - Elsevier
We prove that the standard computable presentation of the space C [0, 1] of continuous real-
valued functions on the unit interval is computably and punctually (primitively recursively) …

Primitive recursive reverse mathematics

N Bazhenov, M Fiori-Carones, L Liu… - Annals of Pure and Applied …, 2024 - Elsevier
We use a second-order analogy PRA 2 of PRA to investigate the proof-theoretic strength of
theorems in countable algebra, analysis, and infinite combinatorics. We compare our results …

Effective presentations of mathematical structures

M Dorzhieva - 2024 - openaccess.wgtn.ac.nz
For several algebraic structures, we show that they have a punctual dimension either 1 or∞.
The punctual degree structures of rigid structures and the ordered integers are dense. We …

Primitive recursive equivalence relations and their primitive recursive complexity

N Bazhenov, KM Ng, L San Mauro, A Sorbi - Computability, 2022 - content.iospress.com
The complexity of equivalence relations has received much attention in the recent literature.
The main tool for such endeavour is the following reducibility: given equivalence relations R …

Primitive recursive ordered fields and some applications

V Selivanov, S Selivanova - Computability, 2023 - content.iospress.com
Primitive recursive ordered fields and some applications - IOS Press You are viewing a
javascript disabled version of the site. Please enable Javascript for this site to function properly …

Punctually presented structures I: Closure theorems

M Dorzhieva, A Melnikov - Computability, 2023 - content.iospress.com
We study the primitive recursive content of various closure results in algebra and model
theory, including the algebraic, the real, and the differential closure theorems. In the case of …

[图书][B] Revolutions and Revelations in Computability: 18th Conference on Computability in Europe, CiE 2022, Swansea, UK, July 11–15, 2022, Proceedings

U Berger, JNY Franklin, F Manea, A Pauly - 2022 - books.google.com
This book constitutes the proceedings of the 18th Conference on Computability in Europe,
CiE 2022, in Swansea, UK, in July 2022. The 19 full papers together with 7 invited papers …