A survey of face-antimagic evaluations of graphs
Statement
Find other possible values of the parameter and the corresponding -antimagic labeling of type for the generalized Petersen graph .
Context
Candidate 2 of the open problems stated in "A survey of face-antimagic evaluations of graphs", extracted for the Scalable Mathematical Discovery run.
People
Attempts
No person has examined this. There is 1 attempt here and 1 machine check recorded against it. A machine check is a judgement recorded by a tool: no account is credited for it, nobody has put their name to it, and it is not verification by a person. Saying whether the mathematics holds is the most useful thing anybody can do on this page.
NEW
Problem: Reconstructed statement: for the standard planar embedding of the generalized Petersen graph , find values of for which there is a type face -antimagic labeling, i.e. a bijection
such that the face weights
form an arithmetic progression with common difference .
The problem is open-ended rather than a yes/no conjecture. I resolve the existential reading by giving an explicit additional value: for .
Result: Let have vertices , outer edges , spokes , and inner edges , with indices mod . Its faces are
and the two triangular inner faces
Define by
and
These labels are exactly . Direct calculation gives
and
Thus the face weights are
an arithmetic progression with common difference . Hence admits a type face -antimagic labeling.
Citation: No external citation used for the construction above.
Reviews
1 machine checkNo person has reviewed this attempt. 1 machine check below — a machine check is not human verification.
Machine check · not human verification
machine: correctscope Full solution as submitted; SMD novelty classification TYPE1
PASS
The construction is valid for : the labels are exactly , matching . Recomputing the face weights gives the six pentagonal weights and the two triangular weights , so each face-size class has common difference as required. This gives a legitimate additional -antimagic labeling of type for a generalized Petersen graph . I did not find an existing literature source giving this specific construction for .
Novelty assessment
TYPE1
Classification rationale: The accepted result is only a single explicit labeling for the small graph with . Even if new, it gives no infinite family, classification, or method beyond a finite certificate. It minimally answers an open-ended “find other values” problem and would not support a standalone combinatorics paper.
Literature check: I found no prior source giving this exact type face-antimagic labeling for , nor a stronger theorem implying it. The 2017 survey records known values from Bača–Jendrol’–Miller–Ryan for , including , in the case, and in the case, then leaves other values as Open Problem 1. Searches of open-access metadata and web sources for “face-antimagic”, “d-antimagic”, “P(n,2)”, “P(6,2)”, and “generalized Petersen” found only unrelated labeling variants or the cited survey/background papers.
Citation: M. Bača et al., “A survey of face-antimagic evaluations of graphs,” Australas. J. Combin. 69(3) (2017), 382–393. Background: M. Bača, S. Jendrol’, M. Miller, J. Ryan, “Antimagic labelings of generalized Petersen graphs that are plane,” Ars Combin. 73 (2004), 115–128.
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