Pith Number

pith:ZLQN2Y3P

pith:2019:ZLQN2Y3P7AR5E7WMCY4V4HHQM6

not attested not anchored not stored refs pending

w=1/3 to w=-1 evolution in a Robertson-Walker space-time with constant scalar curvature

Carlo Alberto Mantica, Luca Guido Molinari

arxiv:1905.06218 v1 · 2019-05-08 · physics.gen-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZLQN2Y3P7AR5E7WMCY4V4HHQM6}

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	2026-05-17T23:46:07.133018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cae0dd636ff823d27ecc16395e1cf067a4a84d1a279da5f5d39252b23f8eabcc

Aliases

arxiv: 1905.06218 · arxiv_version: 1905.06218v1 · doi: 10.48550/arxiv.1905.06218 · pith_short_12: ZLQN2Y3P7AR5 · pith_short_16: ZLQN2Y3P7AR5E7WM · pith_short_8: ZLQN2Y3P

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/ZLQN2Y3P7AR5E7WMCY4V4HHQM6 \
  | 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: cae0dd636ff823d27ecc16395e1cf067a4a84d1a279da5f5d39252b23f8eabcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2bc5769fc1f87eea47ae5e3dc1f802943d66b4f0ce09051a6c068d301877494",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2019-05-08T06:30:19Z",
    "title_canon_sha256": "15cac1dbe5d13ebfaa375099bbf883be0d21295f300247309eb38761ba2e50e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06218",
    "kind": "arxiv",
    "version": 1
  }
}