Research output: Contribution to journal › Article › peer-review
Traight homotopy invariants. / Podkorytov, Semën.
In: Topology Proceedings, Vol. 49, 01.01.2017, p. 41-64.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Traight homotopy invariants
AU - Podkorytov, Semën
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Let X and Y be spaces and M be an abelian group. A homotopy invariant f : [X; Y] → M is called straight if there exists a homomorphism F : L(X; Y ) → M such that f([a]) = F([a]) for all a ∈ C(X; Y ). Here {a} : {X} → {Y} is the homomorphism induced by a between the abelian groups freely generated by X and Y and L(X; Y) is a certain group of "admissible" homomorphisms. We show that all straight invariants can be expressed through a "universal" straight invariant of homological nature.
AB - Let X and Y be spaces and M be an abelian group. A homotopy invariant f : [X; Y] → M is called straight if there exists a homomorphism F : L(X; Y ) → M such that f([a]) = F([a]) for all a ∈ C(X; Y ). Here {a} : {X} → {Y} is the homomorphism induced by a between the abelian groups freely generated by X and Y and L(X; Y) is a certain group of "admissible" homomorphisms. We show that all straight invariants can be expressed through a "universal" straight invariant of homological nature.
KW - Homotopy invariant of finite degree
KW - Ordinary homology
UR - http://www.scopus.com/inward/record.url?scp=85013975863&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85013975863
VL - 49
SP - 41
EP - 64
JO - Topology Proceedings
JF - Topology Proceedings
SN - 0146-4124
ER -
ID: 49886179