Research output: Contribution to journal › Article › peer-review
Base-complexity classifications of qcb0-spaces1. / De Brecht, Matthew; Schröder, Matthias; Selivanov, Victor.
In: Computability, Vol. 5, No. 1, 01.01.2016, p. 75-102.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Base-complexity classifications of qcb0-spaces1
AU - De Brecht, Matthew
AU - Schröder, Matthias
AU - Selivanov, Victor
PY - 2016/1/1
Y1 - 2016/1/1
N2 - We define and study new classifications of qcb0-spaces based on the idea to measure the complexity of their bases. The new classifications complement those given by recently introduced hierarchies of qcb0-spaces and provide new tools to investigate non-countably based qcb0-spaces. As a by-product, we show that there is no universal qcb0-space and establish several new properties of the Kleene-Kreisel continuous functionals of countable types.
AB - We define and study new classifications of qcb0-spaces based on the idea to measure the complexity of their bases. The new classifications complement those given by recently introduced hierarchies of qcb0-spaces and provide new tools to investigate non-countably based qcb0-spaces. As a by-product, we show that there is no universal qcb0-space and establish several new properties of the Kleene-Kreisel continuous functionals of countable types.
KW - hyperprojective hierarchy
KW - hyperspaces
KW - Kleene-Kreisel continuous functionals
KW - qcb0-spaces
KW - Scott topology
KW - Y-based spaces
UR - http://www.scopus.com/inward/record.url?scp=85011110655&partnerID=8YFLogxK
U2 - 10.3233/COM-150044
DO - 10.3233/COM-150044
M3 - Article
AN - SCOPUS:85011110655
VL - 5
SP - 75
EP - 102
JO - Computability
JF - Computability
SN - 2211-3568
IS - 1
ER -
ID: 126985731