Pith Number

pith:663DDFUH

pith:2008:663DDFUHAK42VMYN7G2BZ3CDTX

not attested not anchored not stored refs pending

Analytic solutions to the accretion of a rotating finite cloud towards a central object I. Newtonian approach

E. Nagel, E. Tejeda, S. Mendoza

arxiv:0803.1020 v3 · 2008-03-07 · astro-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{663DDFUHAK42VMYN7G2BZ3CDTX}

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	2026-05-18T03:38:12.873621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7b631968702b9aab30df9b41cec439ddcb88f3c020fbe963c9d6b52e4e7730a

Aliases

arxiv: 0803.1020 · arxiv_version: 0803.1020v3 · doi: 10.48550/arxiv.0803.1020 · pith_short_12: 663DDFUHAK42 · pith_short_16: 663DDFUHAK42VMYN · pith_short_8: 663DDFUH

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/663DDFUHAK42VMYN7G2BZ3CDTX \
  | 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: f7b631968702b9aab30df9b41cec439ddcb88f3c020fbe963c9d6b52e4e7730a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8acadf0e00e5e4225bcd8e858f35f1954ce26628cc814e6587684032a968e2a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-03-07T04:21:51Z",
    "title_canon_sha256": "96636249467a621ad89ecee40b16a3afa8dcc96af01d406e77c84785fa4aa5c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.1020",
    "kind": "arxiv",
    "version": 3
  }
}