Pith. sign in

REVIEW 1 cited by

Planar graphs with the maximum number of induced 6-cycles

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2110.07319 v2 pith:HZGVS62F submitted 2021-10-14 math.CO

classification math.CO
keywords cyclesmaximumgraphcyclegraphsinducednumberplanar
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

For large $n$ we determine the maximum number of induced 6-cycles which can be contained in a planar graph on $n$ vertices, and we classify the graphs which achieve this maximum. In particular we show that the maximum is achieved by the graph obtained by blowing up three pairwise non-adjacent vertices in a 6-cycle to sets of as even size as possible, and that every extremal example closely resembles this graph. This extends previous work by the author which solves the problem for 4-cycles and 5-cycles. The 5-cycle problem was also solved independently by Ghosh, Gy\H{o}ri, Janzer, Paulos, Salia, and Zamora.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The maximum number of odd cycles in planar graphs forbidding shorter odd cycles

    math.CO 2026-07 accept novelty 6.5 of 10

    For every k≥3 and all large n, the maximum number of C_{2k+1} in an n-vertex planar graph with no shorter odd cycle equals the maximum product of k positive integers summing to n-k-1.

Pith tools