Pith Number

pith:53JVP26Z

pith:2011:53JVP26Z4BSYEIWNMBD2VUWLJX

not attested not anchored not stored refs pending

The rainbow connection number of 2-connected graphs

Ingo Schiermeyer, Jan Ekstein, Maria Koch, P\v{r}emysl Holub, Stephan Matos Camacho, Tom\'a\v{s} Kaiser, Zden\v{e}k Ryj\'a\v{c}ek

arxiv:1110.5736 v1 · 2011-10-26 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{53JVP26Z4BSYEIWNMBD2VUWLJX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:10:11.442726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eed357ebd9e0658222cd6047aad2cb4dd1b80b44524b19c677cf8d5f7c8d2749

Aliases

arxiv: 1110.5736 · arxiv_version: 1110.5736v1 · doi: 10.48550/arxiv.1110.5736 · pith_short_12: 53JVP26Z4BSY · pith_short_16: 53JVP26Z4BSYEIWN · pith_short_8: 53JVP26Z

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/53JVP26Z4BSYEIWNMBD2VUWLJX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: eed357ebd9e0658222cd6047aad2cb4dd1b80b44524b19c677cf8d5f7c8d2749

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a023c5df96330028a99501f5ecba5f1877252e1b261501917942a34579e79f4e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-10-26T08:40:31Z",
    "title_canon_sha256": "980e9ead127d2076ab79ff7cf7c8a8b0a5ff42293968019a2753022b1b74d734"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.5736",
    "kind": "arxiv",
    "version": 1
  }
}