Pith Number

pith:QQAYMYMW

pith:2013:QQAYMYMWXMA7U2DD5QQLHQKKWA

not attested not anchored not stored refs pending

On Adjacency Matrices and Descriptors of Signed Cycle Graphs

A.M. Mathai, Thomas Zaslavsky

arxiv:1303.3082 v1 · 2013-03-13 · 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{QQAYMYMWXMA7U2DD5QQLHQKKWA}

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	2026-05-18T01:02:14.403132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8401866196bb01fa6863ec20b3c14ab034de1520004bdff98ad2b88d84a01e11

Aliases

arxiv: 1303.3082 · arxiv_version: 1303.3082v1 · doi: 10.48550/arxiv.1303.3082 · pith_short_12: QQAYMYMWXMA7 · pith_short_16: QQAYMYMWXMA7U2DD · pith_short_8: QQAYMYMW

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/QQAYMYMWXMA7U2DD5QQLHQKKWA \
  | 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: 8401866196bb01fa6863ec20b3c14ab034de1520004bdff98ad2b88d84a01e11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "159d1258a07df9f1e136f41323c7235d61f608e2c1fe34b67befc197c40e3422",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-03-13T03:33:53Z",
    "title_canon_sha256": "687fe6af475cd75dbaec8fa8bc8f39253f572d069b47ae333b408d1cc9b2aac1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.3082",
    "kind": "arxiv",
    "version": 1
  }
}