Pith Number

pith:7EGQPG2A

pith:2009:7EGQPG2AIRH42KVJ3SXELHM6LF

not attested not anchored not stored refs pending

A noncommutative sigma-model

Jonathan Rosenberg, Varghese Mathai

arxiv:0903.4241 v2 · 2009-03-25 · hep-th · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7EGQPG2AIRH42KVJ3SXELHM6LF}

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	2026-05-18T04:25:28.800661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f90d079b40444fcd2aa9dcae459d9e59427c5be7e29d7b220e49b57492284dd2

Aliases

arxiv: 0903.4241 · arxiv_version: 0903.4241v2 · doi: 10.48550/arxiv.0903.4241 · pith_short_12: 7EGQPG2AIRH4 · pith_short_16: 7EGQPG2AIRH42KVJ · pith_short_8: 7EGQPG2A

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/7EGQPG2AIRH42KVJ3SXELHM6LF \
  | 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: f90d079b40444fcd2aa9dcae459d9e59427c5be7e29d7b220e49b57492284dd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5d62829be33fa5b59603007add70d7b3cb67db360c2cb75d5f2005f0ecd8c9a",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-03-25T05:57:28Z",
    "title_canon_sha256": "56e4fe5f0749a2a83c08d2dc0c3f11e33dd4898b3b49bba2ac9ce6502fc09e24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4241",
    "kind": "arxiv",
    "version": 2
  }
}