Pith Number

pith:ZGZ4T2YJ

pith:2006:ZGZ4T2YJBGHSQ57QGUAPEX7PNC

not attested not anchored not stored refs pending

The Principle of the Fermionic Projector: An Approach for Quantum Gravity?

Felix Finster

arxiv:gr-qc/0601128 v3 · 2006-01-29 · 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{ZGZ4T2YJBGHSQ57QGUAPEX7PNC}

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	2026-05-18T04:02:24.028485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9b3c9eb09098f2877f03500f25fef68b4bcf7214383e9466d004001aaed02df

Aliases

arxiv: gr-qc/0601128 · arxiv_version: gr-qc/0601128v3 · doi: 10.48550/arxiv.gr-qc/0601128 · pith_short_12: ZGZ4T2YJBGHS · pith_short_16: ZGZ4T2YJBGHSQ57Q · pith_short_8: ZGZ4T2YJ

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/ZGZ4T2YJBGHSQ57QGUAPEX7PNC \
  | 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: c9b3c9eb09098f2877f03500f25fef68b4bcf7214383e9466d004001aaed02df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccdb64163bfe73ed6c83ec0281eb5882323c587c7a60eeabd95df971230db180",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2006-01-29T17:51:59Z",
    "title_canon_sha256": "1dbbe1beb04ed53a74ae5f008e5c0c34819d6bd85739d67a02af46ceff660f07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0601128",
    "kind": "arxiv",
    "version": 3
  }
}