Pith Number

pith:4L4TNOBN

pith:2019:4L4TNOBNXFSH7Q5BQM47WNDD4J

not attested not anchored not stored refs pending

Accelerating imperfect fluid

Hristu Culetu

arxiv:1908.11438 v5 · 2019-08-17 · 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{4L4TNOBNXFSH7Q5BQM47WNDD4J}

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	2026-07-05T00:46:48.211201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2f936b82db9647fc3a18339fb3463e2744481b8afed486472ec2533af025277

Aliases

arxiv: 1908.11438 · arxiv_version: 1908.11438v5 · doi: 10.48550/arxiv.1908.11438 · pith_short_12: 4L4TNOBNXFSH · pith_short_16: 4L4TNOBNXFSH7Q5B · pith_short_8: 4L4TNOBN

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/4L4TNOBNXFSH7Q5BQM47WNDD4J \
  | 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: e2f936b82db9647fc3a18339fb3463e2744481b8afed486472ec2533af025277

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57ceb3604b4779b404d56be94e8b321e1e3a7e59c1950d7b2c784d6019d40f15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-08-17T23:16:51Z",
    "title_canon_sha256": "81f399f3960984c69ef03bf0d19d8974d32815d3b0b1ff080af723ab06d6c00a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.11438",
    "kind": "arxiv",
    "version": 5
  }
}