Pith Number

pith:7SLCREZP

pith:2005:7SLCREZPQRRC4SNCBWOHXRHQAN

not attested not anchored not stored refs pending

On a class of algebras associated to directed graphs

Israel Gelfand, Robert Lee Wilson, Shirlei Serconek, Vladimir Retakh

arxiv:math/0506507 v1 · 2005-06-24 · math.QA · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7SLCREZPQRRC4SNCBWOHXRHQAN}

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

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	2026-05-18T01:05:23.371529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc9628932f84622e49a20d9c7bc4f0036d92b4a667586afc174c634536c17b79

Aliases

arxiv: math/0506507 · arxiv_version: math/0506507v1 · doi: 10.48550/arxiv.math/0506507 · pith_short_12: 7SLCREZPQRRC · pith_short_16: 7SLCREZPQRRC4SNC · pith_short_8: 7SLCREZP

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/7SLCREZPQRRC4SNCBWOHXRHQAN \
  | 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: fc9628932f84622e49a20d9c7bc4f0036d92b4a667586afc174c634536c17b79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "191f265f044c8424756acaba7d52eade33e028a912bd4013b498198108e160fd",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "",
    "primary_cat": "math.QA",
    "submitted_at": "2005-06-24T17:46:42Z",
    "title_canon_sha256": "b82713ceb72f2db70375df6b3cd0636c553a129a020269df9ce206af4ff175c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0506507",
    "kind": "arxiv",
    "version": 1
  }
}