Pith Number

pith:SR2WNPZM

pith:2018:SR2WNPZMPNRQ7DEJ4ZPML7COFA

not attested not anchored not stored refs pending

$f(R)$ gravity with Torsion and the Immirzi field: signature for GW detection

Flavio Bombacigno, Giovanni Montani

arxiv:1804.03897 v2 · 2018-04-11 · 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{SR2WNPZMPNRQ7DEJ4ZPML7COFA}

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	2026-05-18T00:11:34.598402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

947566bf2c7b630f8c89e65ec5fc4e281154d75db29b63a6507f83e1e63522e1

Aliases

arxiv: 1804.03897 · arxiv_version: 1804.03897v2 · doi: 10.48550/arxiv.1804.03897 · pith_short_12: SR2WNPZMPNRQ · pith_short_16: SR2WNPZMPNRQ7DEJ · pith_short_8: SR2WNPZM

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/SR2WNPZMPNRQ7DEJ4ZPML7COFA \
  | 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: 947566bf2c7b630f8c89e65ec5fc4e281154d75db29b63a6507f83e1e63522e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2e72648ffe5557d3b186e478467a901cf9e6a5d79862c77264d20d20439a324",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-04-11T09:37:05Z",
    "title_canon_sha256": "664616b7a7e062c1a6f456909df4d2c8b55619c4de53c9e9d1da030ac0226b2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03897",
    "kind": "arxiv",
    "version": 2
  }
}