Infinitary Combinatory Reduction Systems: Confluence
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Infinitary Combinatory Reduction Systems: Confluence. / Ketema, Jeroen; Simonsen, Jakob Grue.
In: Logical Methods in Computer Science, Vol. 5, No. 4:3, 2009, p. 1-29.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Infinitary Combinatory Reduction Systems: Confluence
AU - Ketema, Jeroen
AU - Simonsen, Jakob Grue
PY - 2009
Y1 - 2009
N2 - We study confluence in the setting of higher-order infinitary rewriting, in particular for infinitary Combinatory Reduction Systems (iCRSs). We prove that fullyextended, orthogonal iCRSs are confluent modulo identification of hypercollapsing subterms. As a corollary, we obtain that fully-extended, orthogonal iCRSs have the normal form property and the unique normal form property (with respect to reduction). We also show that, unlike the case in first-order infinitary rewriting, almost non-collapsing iCRSs are not necessarily confluent.
AB - We study confluence in the setting of higher-order infinitary rewriting, in particular for infinitary Combinatory Reduction Systems (iCRSs). We prove that fullyextended, orthogonal iCRSs are confluent modulo identification of hypercollapsing subterms. As a corollary, we obtain that fully-extended, orthogonal iCRSs have the normal form property and the unique normal form property (with respect to reduction). We also show that, unlike the case in first-order infinitary rewriting, almost non-collapsing iCRSs are not necessarily confluent.
M3 - Journal article
VL - 5
SP - 1
EP - 29
JO - Logical Methods in Computer Science
JF - Logical Methods in Computer Science
SN - 1860-5974
IS - 4:3
ER -
ID: 16408467