Pith Number

pith:V6CEM5GD

pith:2015:V6CEM5GD5PRVQN2DBPCGDKPA5B

not attested not anchored not stored refs pending

On the structure of (pan, even hole)-free graphs

Chinh T. Hoang, Kathie Cameron, Steven Chaplick

arxiv:1508.03062 v2 · 2015-08-12 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V6CEM5GD5PRVQN2DBPCGDKPA5B}

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	2026-05-18T00:49:52.624155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af844674c3ebe35837430bc461a9e0e86e6aef5cc5aee9203fa2b7bbf18cfcf7

Aliases

arxiv: 1508.03062 · arxiv_version: 1508.03062v2 · doi: 10.48550/arxiv.1508.03062 · pith_short_12: V6CEM5GD5PRV · pith_short_16: V6CEM5GD5PRVQN2D · pith_short_8: V6CEM5GD

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/V6CEM5GD5PRVQN2DBPCGDKPA5B \
  | 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: af844674c3ebe35837430bc461a9e0e86e6aef5cc5aee9203fa2b7bbf18cfcf7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb422353f0588d6ba5d9272720063327d4104f91e173fdbb11858851b579cdd3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-08-12T20:38:01Z",
    "title_canon_sha256": "fbd828d79ea2ba2ce4b027e6c409069e724218ce25da45e2a9a76e93dea4bd83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03062",
    "kind": "arxiv",
    "version": 2
  }
}