Pith Number

pith:OLOPMPNE

pith:2009:OLOPMPNEQIYV5GBKX3CSBKPRST

not attested not anchored not stored refs pending

A Noncommutative Space Approach to Confined Dirac Fermions in Graphene

Ahmed Jellal, Omer F. Dayi

arxiv:0909.1448 v3 · 2009-09-08 · cond-mat.mes-hall · hep-th · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OLOPMPNEQIYV5GBKX3CSBKPRST}

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	2026-05-18T02:34:30.817117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72dcf63da482315e982abec520a9f194e296ab8ae1203db268baba28931c3c63

Aliases

arxiv: 0909.1448 · arxiv_version: 0909.1448v3 · doi: 10.48550/arxiv.0909.1448 · pith_short_12: OLOPMPNEQIYV · pith_short_16: OLOPMPNEQIYV5GBK · pith_short_8: OLOPMPNE

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/OLOPMPNEQIYV5GBKX3CSBKPRST \
  | 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: 72dcf63da482315e982abec520a9f194e296ab8ae1203db268baba28931c3c63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d02ac657a5c3c13669a1670471caeee4922ba07dea80a89c99aa2874115ec03",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2009-09-08T11:45:17Z",
    "title_canon_sha256": "c8bdf940769247b1d91376efbaa14e9f075ab5116cefda05781d82e8afdb3024"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1448",
    "kind": "arxiv",
    "version": 3
  }
}