Pith Number

pith:MSDPQ65Q

pith:2010:MSDPQ65QJNCYM4JHMIMW6M34UV

not attested not anchored not stored refs pending

Observables in 3d spinfoam quantum gravity with fermions

Richard J. Dowdall, Winston J. Fairbairn

arxiv:1003.1847 v1 · 2010-03-09 · 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{MSDPQ65QJNCYM4JHMIMW6M34UV}

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	2026-05-18T02:08:36.047256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6486f87bb04b4586712762196f337ca5624af8a3bd2c433a0481a98aec1a470c

Aliases

arxiv: 1003.1847 · arxiv_version: 1003.1847v1 · doi: 10.48550/arxiv.1003.1847 · pith_short_12: MSDPQ65QJNCY · pith_short_16: MSDPQ65QJNCYM4JH · pith_short_8: MSDPQ65Q

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/MSDPQ65QJNCYM4JHMIMW6M34UV \
  | 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: 6486f87bb04b4586712762196f337ca5624af8a3bd2c433a0481a98aec1a470c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a91c045148220b86452c545bcff261f70e8059be0aedb0588730b702d164357",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-03-09T11:18:21Z",
    "title_canon_sha256": "3427645a505d69f3108b77b9a530a0da38d9916ffb564c3ec67771656fccaf31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.1847",
    "kind": "arxiv",
    "version": 1
  }
}