Research output: Contribution to journal › Article › peer-review
Graphical virtual links and a polynomial for signed cyclic graphs. / Deng, Qingying; Jin, Xian'An; Kauffman, Louis H.
In: Journal of Knot Theory and its Ramifications, Vol. 27, No. 10, 1850054, 01.09.2018.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Graphical virtual links and a polynomial for signed cyclic graphs
AU - Deng, Qingying
AU - Jin, Xian'An
AU - Kauffman, Louis H.
N1 - Publisher Copyright: © 2018 World Scientific Publishing Company.
PY - 2018/9/1
Y1 - 2018/9/1
N2 - For a signed cyclic graph G, we can construct a unique virtual link L by taking the medial construction and converting 4-valent vertices of the medial graph to crossings according to the signs. If a virtual link can occur in this way then we say that the virtual link is graphical. In this paper, we shall prove that a virtual link L is graphical if and only if it is checkerboard colorable. On the other hand, we introduce a polynomial F[G] for signed cyclic graphs, which is defined via a deletion-marking recursion. We shall establish the relationship between F[G] of a signed cyclic graph G and the bracket polynomial of one of the virtual link diagrams associated with G. Finally, we give a spanning subgraph expansion for F[G].
AB - For a signed cyclic graph G, we can construct a unique virtual link L by taking the medial construction and converting 4-valent vertices of the medial graph to crossings according to the signs. If a virtual link can occur in this way then we say that the virtual link is graphical. In this paper, we shall prove that a virtual link L is graphical if and only if it is checkerboard colorable. On the other hand, we introduce a polynomial F[G] for signed cyclic graphs, which is defined via a deletion-marking recursion. We shall establish the relationship between F[G] of a signed cyclic graph G and the bracket polynomial of one of the virtual link diagrams associated with G. Finally, we give a spanning subgraph expansion for F[G].
KW - bracket polynomial
KW - checkerboard colorable
KW - F [ G ] polynomial
KW - graphical
KW - orientable ribbon graphs
KW - signed cyclic graph
KW - Virtual link
KW - F[G] polynomial
KW - KNOTS
KW - SURFACES
UR - http://www.scopus.com/inward/record.url?scp=85052681216&partnerID=8YFLogxK
U2 - 10.1142/S0218216518500542
DO - 10.1142/S0218216518500542
M3 - Article
AN - SCOPUS:85052681216
VL - 27
JO - Journal of Knot Theory and its Ramifications
JF - Journal of Knot Theory and its Ramifications
SN - 0218-2165
IS - 10
M1 - 1850054
ER -
ID: 16336580