Pith Number

pith:UQWIVKQN

pith:2009:UQWIVKQNDTGXJWZVKQJLDS4FDW

not attested not anchored not stored refs pending

Intersection matrices revisited

E. Ghorbani, M. Mohammad-Noori, N. Ghareghani

arxiv:0902.4367 v4 · 2009-02-25 · math.CO · math.RA · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UQWIVKQNDTGXJWZVKQJLDS4FDW}

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	2026-05-18T04:08:24.775433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a42c8aaa0d1ccd74db355412b1cb851da7d93cab24b1117d7f19ecd210a3cc8e

Aliases

arxiv: 0902.4367 · arxiv_version: 0902.4367v4 · doi: 10.48550/arxiv.0902.4367 · pith_short_12: UQWIVKQNDTGX · pith_short_16: UQWIVKQNDTGXJWZV · pith_short_8: UQWIVKQN

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/UQWIVKQNDTGXJWZVKQJLDS4FDW \
  | 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: a42c8aaa0d1ccd74db355412b1cb851da7d93cab24b1117d7f19ecd210a3cc8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4331585a26d120f47a0eae8c11425acfb516ae85d2420f0204f787155d9736fa",
    "cross_cats_sorted": [
      "math.RA",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-02-25T13:21:01Z",
    "title_canon_sha256": "7ac541d750ba52502222e42de8865a59799306cfa29d2d85d0b1dd2f0e5cbd92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4367",
    "kind": "arxiv",
    "version": 4
  }
}