Pith Number

pith:L56AORF2

pith:2017:L56AORF25R3WXCWE6WVI37D5AY

not attested not anchored not stored refs pending

On Freud's superpotential in General Relativity and in Einstein-Cartan theory

Christian G. Boehmer (London), Columbia, Friedrich W. Hehl (Cologne, Missouri)

arxiv:1712.03268 v1 · 2017-12-08 · gr-qc · hep-th · math-ph · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L56AORF25R3WXCWE6WVI37D5AY}

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	2026-05-18T00:22:23.663915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f7c0744baec776b8ac4f5aa8dfc7d060ebaf4bfd96ad829a8deae5701b4a378

Aliases

arxiv: 1712.03268 · arxiv_version: 1712.03268v1 · doi: 10.48550/arxiv.1712.03268 · pith_short_12: L56AORF25R3W · pith_short_16: L56AORF25R3WXCWE · pith_short_8: L56AORF2

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/L56AORF25R3WXCWE6WVI37D5AY \
  | 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: 5f7c0744baec776b8ac4f5aa8dfc7d060ebaf4bfd96ad829a8deae5701b4a378

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c4cb016a8570f9079013eb4e3c52134e1cf4042dc7f06d61fd9e38503a9f419",
    "cross_cats_sorted": [
      "hep-th",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-12-08T19:46:13Z",
    "title_canon_sha256": "710dbf990df27c5dd366c751c7b4eca7a982362551d2afd80d3cd0b027ecf8bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.03268",
    "kind": "arxiv",
    "version": 1
  }
}