Pith Number

pith:CUMQRQFJ

pith:2006:CUMQRQFJMURITUFCRQ2H42P2J4

not attested not anchored not stored refs pending

Algebraic approach to quantum gravity II: noncommutative spacetime

S. Majid

arxiv:hep-th/0604130 v1 · 2006-04-19 · hep-th · gr-qc · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CUMQRQFJMURITUFCRQ2H42P2J4}

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.

Cited by

2 papers in Pith

Indefinite probabilities in quantum spacetime: A deepening of unpredictability

Receipt and verification

First computed	2026-07-04T14:54:32.593970Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

151908c0a9652289d0a28c347e69fa4f09235f94955109906939f0f5c83e11f8

Aliases

arxiv: hep-th/0604130 · arxiv_version: hep-th/0604130v1 · doi: 10.48550/arxiv.hep-th/0604130 · pith_short_12: CUMQRQFJMURI · pith_short_16: CUMQRQFJMURITUFC · pith_short_8: CUMQRQFJ

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/CUMQRQFJMURITUFCRQ2H42P2J4 \
  | 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: 151908c0a9652289d0a28c347e69fa4f09235f94955109906939f0f5c83e11f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a171a4dc9628b7784c9173968e72aebd514334017cacee3e0678881af88f3990",
    "cross_cats_sorted": [
      "gr-qc",
      "math.QA"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2006-04-19T11:56:49Z",
    "title_canon_sha256": "b97509e4b30342f722b6d313d501a1f458499164aa1c8298254ec8da82d58cd4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0604130",
    "kind": "arxiv",
    "version": 1
  }
}