Pith Number

pith:ZUDGFXSL

pith:1998:ZUDGFXSLYUNUF3WLPPXHDXVTSV

not attested not anchored not stored refs pending

The Universe With Bulk Viscosity

Arbab I. Arbab

arxiv:gr-qc/9812070 v2 · 1998-12-20 · 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{ZUDGFXSLYUNUF3WLPPXHDXVTSV}

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	2026-05-18T02:37:28.113750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd0662de4bc51b42eecb7bee71deb395792b61971903f66eac2290812d9ac216

Aliases

arxiv: gr-qc/9812070 · arxiv_version: gr-qc/9812070v2 · doi: 10.48550/arxiv.gr-qc/9812070 · pith_short_12: ZUDGFXSLYUNU · pith_short_16: ZUDGFXSLYUNUF3WL · pith_short_8: ZUDGFXSL

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/ZUDGFXSLYUNUF3WLPPXHDXVTSV \
  | 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: cd0662de4bc51b42eecb7bee71deb395792b61971903f66eac2290812d9ac216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbe31e2df69c076a73290867edd9c918b9974b64082bebd40f8906006e969e28",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1998-12-20T15:58:25Z",
    "title_canon_sha256": "bc306673c75d71653e0e077f61f2fbf230aca27fccefa3ed1c516c2d9665548a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9812070",
    "kind": "arxiv",
    "version": 2
  }
}