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Comments on Name for a graph invariant: minimal positive integer $d$ such that the graph is $d$-biclique-free

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Name for a graph invariant: minimal positive integer $d$ such that the graph is $d$-biclique-free

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Consider this:

A class of graphs $C$ is said to be $d$-biclique-free, for some $d > 0$, if $K_{d,d}$ is not a subgraph of any $G \in C$

Source: https://arxiv.org/abs/1502.04803

Seems like the definition implies a graph invariant, the minimum $d$ for which a graph is $d$-biclique-free. I'd like a name for this property.

The context is that I'm collecting a (partly) machine-readable collection of graph invariants. Basically I want to associate each well-known and important graph property or class of graphs with:

  • a machine-readable name (identifier in a programming language)

  • a collection of alternative names

  • a very short description in natural language

  • other data points

I do not want to make up a name (myself), as the end-result will ideally be used by other people. I would be happy if someone knows a name for this property that is already used in published work. If not that, perhaps a made up name would be fine, too, as long as someone else does it. If so, hopefully the name catches on.

I was not able to find an answer by searching ISGCI. I suppose there's no info on biclique-free graphs there.

History

1 comment thread

A related paper and some database links (2 comments)
A related paper and some database links
Dexxor‭ wrote 11 months ago

I sadly don't know a name for this invariant but in the paper On covering graphs by complete bipartite subgraphs a closely related invariant is denoted cl(G) for some reason.

I'm somewhat of a graph invariant collector myself and have been documenting some over at Wikidata with short descriptions and aliases, but your invariant is not there; nor is it in HOPS, findstat or sagemath.

nsajko‭ wrote 11 months ago

Firstly, thank you very much for the links to existing graph invariant databases! I only knew about ISGCI.

Regarding my question, I suppose I'll just accept that this invariant currently has no name. I can always add the invariant once a name eventually catches on.

My database is currently here: