Pith Number

pith:AZ2MON2W

pith:2020:AZ2MON2WZWI7ZJSNWDWZXLBHDQ

not attested not anchored not stored refs pending

Hopf link volume simplicity constraints in spin foam models

Benjamin Bahr, Mehdi Assanioussi

arxiv:2005.12004 v1 · 2020-05-25 · 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{AZ2MON2WZWI7ZJSNWDWZXLBHDQ}

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

1 paper in Pith

(2+1) Lorentzian quantum cosmology from spin-foams: opportunities and obstacles for semi-classicality

Receipt and verification

First computed	2026-07-05T01:46:54.456927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0674c73756cd91fca64db0ed9bac271c37905b42f7336551ac9e5b62f8bb6216

Aliases

arxiv: 2005.12004 · arxiv_version: 2005.12004v1 · doi: 10.48550/arxiv.2005.12004 · pith_short_12: AZ2MON2WZWI7 · pith_short_16: AZ2MON2WZWI7ZJSN · pith_short_8: AZ2MON2W

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/AZ2MON2WZWI7ZJSNWDWZXLBHDQ \
  | 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: 0674c73756cd91fca64db0ed9bac271c37905b42f7336551ac9e5b62f8bb6216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f6c7a42da5e0cb528d86119faffcd8f6ccc2c57afa2bc01a769f8b25d609d3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-05-25T09:38:06Z",
    "title_canon_sha256": "e1a3b1c98aa51800d53fe7e6b62f4aac5f11acec08abec8aab47259135f2c77f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.12004",
    "kind": "arxiv",
    "version": 1
  }
}