Pith Number

pith:27NIJBAF

pith:1994:27NIJBAFBMRRGUX4XXMMV3WQU3

not attested not anchored not stored refs pending

Regge calculus and Ashtekar variables

Giorgio Immirzi

arxiv:gr-qc/9402004 v1 · 1994-02-02 · 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{27NIJBAFBMRRGUX4XXMMV3WQU3}

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

Quantum geometry from higher gauge theory

Receipt and verification

First computed	2026-07-04T17:25:35.754045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7da8484050b231352fcbdd8caeed0a6f0492d89cd12faec3b22e99900c1ff72

Aliases

arxiv: gr-qc/9402004 · arxiv_version: gr-qc/9402004v1 · doi: 10.48550/arxiv.gr-qc/9402004 · pith_short_12: 27NIJBAFBMRR · pith_short_16: 27NIJBAFBMRRGUX4 · pith_short_8: 27NIJBAF

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/27NIJBAFBMRRGUX4XXMMV3WQU3 \
  | 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: d7da8484050b231352fcbdd8caeed0a6f0492d89cd12faec3b22e99900c1ff72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00a62e449c9f79eb6c71a7bcd1ab9460877dcea3baed392bfc02571b406936bd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1994-02-02T12:38:12Z",
    "title_canon_sha256": "f601e8d9605e2df004e6aa2f8b074eb04aee59cf10acd9752eb74034e1fa11f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9402004",
    "kind": "arxiv",
    "version": 1
  }
}