Pith Number

pith:C36QDKP5

pith:2013:C36QDKP5ABZ52MW4U53OMFU747

not attested not anchored not stored refs pending

The gravitational drag force on an extended object moving in a gas

C. G. Bernal, F. J. Sanchez-Salcedo

arxiv:1308.4370 v1 · 2013-08-20 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C36QDKP5ABZ52MW4U53OMFU747}

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	2026-05-18T01:48:07.628995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16fd01a9fd0073dd32dca776e6169fe7fb2eaf7976e37ee1a0251a4d5396a633

Aliases

arxiv: 1308.4370 · arxiv_version: 1308.4370v1 · doi: 10.48550/arxiv.1308.4370 · pith_short_12: C36QDKP5ABZ5 · pith_short_16: C36QDKP5ABZ52MW4 · pith_short_8: C36QDKP5

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/C36QDKP5ABZ52MW4U53OMFU747 \
  | 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: 16fd01a9fd0073dd32dca776e6169fe7fb2eaf7976e37ee1a0251a4d5396a633

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "394d4252c58d1794bed25d4eee60723c06663ce8df893a1189e2cc59290871ba",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-20T18:37:53Z",
    "title_canon_sha256": "ac19398f9e84a1aa23e87c126017dd7086bcf7ce9a69d46fec7cf34625b3235f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4370",
    "kind": "arxiv",
    "version": 1
  }
}