Pith Number

pith:Z2HFEUI3

pith:2011:Z2HFEUI3YB2V4EJERPS7CXK4ND

not attested not anchored not stored refs pending

Curvature in spinfoams

Claudio Perini, Elena Magliaro

arxiv:1103.4602 v3 · 2011-03-23 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z2HFEUI3YB2V4EJERPS7CXK4ND}

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	2026-05-18T03:37:05.868290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce8e52511bc0755e11248be5f15d5c68ce59fdc3b47809636d14a363ea19e309

Aliases

arxiv: 1103.4602 · arxiv_version: 1103.4602v3 · doi: 10.48550/arxiv.1103.4602 · pith_short_12: Z2HFEUI3YB2V · pith_short_16: Z2HFEUI3YB2V4EJE · pith_short_8: Z2HFEUI3

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/Z2HFEUI3YB2V4EJERPS7CXK4ND \
  | 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: ce8e52511bc0755e11248be5f15d5c68ce59fdc3b47809636d14a363ea19e309

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c222b18bfae618b72c554dc66ac942adba3425d39f698424c5d226eab7a6479",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-03-23T19:39:19Z",
    "title_canon_sha256": "1855b560291c7a56e6c3f8921966277fd9a9372540d123fa218e44f936f1712c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4602",
    "kind": "arxiv",
    "version": 3
  }
}