Pith Number

pith:7DUGBQPA

pith:2014:7DUGBQPAN5GE5L35H64BHKZBQ2

not attested not anchored not stored refs pending

Equations of motion in metric-affine gravity: A covariant unified framework

Dirk Puetzfeld, Yuri N. Obukhov

arxiv:1408.5669 v2 · 2014-08-25 · 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{7DUGBQPAN5GE5L35H64BHKZBQ2}

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	2026-05-18T02:39:40.149520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8e860c1e06f4c4eaf7d3fb813ab21868a2d9068fcb2b519770532b9abfc15df

Aliases

arxiv: 1408.5669 · arxiv_version: 1408.5669v2 · doi: 10.48550/arxiv.1408.5669 · pith_short_12: 7DUGBQPAN5GE · pith_short_16: 7DUGBQPAN5GE5L35 · pith_short_8: 7DUGBQPA

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/7DUGBQPAN5GE5L35H64BHKZBQ2 \
  | 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: f8e860c1e06f4c4eaf7d3fb813ab21868a2d9068fcb2b519770532b9abfc15df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4bf2c71c8c94e6d4aa157217ee4d51e11df48830f780a6cacdb5518168ff9ce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-08-25T06:44:57Z",
    "title_canon_sha256": "8ed3e0725ff753d7f08d7a357e7b26253058ebe81e89d89811da49777fdf3dac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5669",
    "kind": "arxiv",
    "version": 2
  }
}