Pith Number

pith:QWX5HHW3

pith:2012:QWX5HHW34Z5PKRUBTA3USYT5PT

not attested not anchored not stored refs pending

Toward a graph version of Rado's theorem

Andy Parrish

arxiv:1202.2581 v1 · 2012-02-12 · 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{QWX5HHW34Z5PKRUBTA3USYT5PT}

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	2026-05-18T04:02:26.155165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85afd39edbe67af54681983749627d7cedad9967e00292193914ba16f7d7eab5

Aliases

arxiv: 1202.2581 · arxiv_version: 1202.2581v1 · doi: 10.48550/arxiv.1202.2581 · pith_short_12: QWX5HHW34Z5P · pith_short_16: QWX5HHW34Z5PKRUB · pith_short_8: QWX5HHW3

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/QWX5HHW34Z5PKRUBTA3USYT5PT \
  | 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: 85afd39edbe67af54681983749627d7cedad9967e00292193914ba16f7d7eab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bcd0292f52db683e9b932884b518a8e05c6f4de02e03c3513d3d83ad2cafe03",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-02-12T22:44:57Z",
    "title_canon_sha256": "7e2f8fc37d96bb6fd561a7672f00d2627240ffd05d0db0374689c5313ea886a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2581",
    "kind": "arxiv",
    "version": 1
  }
}