Pith Number

pith:MEPGPZJL

pith:2011:MEPGPZJLP2FHNBFYAZ27QVHQJE

not attested not anchored not stored refs pending

Many-nodes/many-links spinfoam: the homogeneous and isotropic case

Francesca Vidotto

arxiv:1107.2633 v3 · 2011-07-13 · 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{MEPGPZJLP2FHNBFYAZ27QVHQJE}

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	2026-05-18T03:55:21.596951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

611e67e52b7e8a7684b80675f854f0493638d61cd4b8ec7bdc6c1789cdc5d244

Aliases

arxiv: 1107.2633 · arxiv_version: 1107.2633v3 · doi: 10.48550/arxiv.1107.2633 · pith_short_12: MEPGPZJLP2FH · pith_short_16: MEPGPZJLP2FHNBFY · pith_short_8: MEPGPZJL

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/MEPGPZJLP2FHNBFYAZ27QVHQJE \
  | 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: 611e67e52b7e8a7684b80675f854f0493638d61cd4b8ec7bdc6c1789cdc5d244

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "758464503469216fe400f2c6d5a9cdcc49076f2b1f1bde38c3e0037004e3cb6a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-07-13T19:18:34Z",
    "title_canon_sha256": "eb93be572b9c0c5b0b3f92193b48ef925823325c9e4878af9e16bc7434306d41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2633",
    "kind": "arxiv",
    "version": 3
  }
}