Pith Number

pith:HMW7Q2PA

pith:2002:HMW7Q2PADZYG27LEG62JH6I3ON

not attested not anchored not stored refs pending

Mass-to-light ratios from the fundamental plane of spiral galaxy disks

Alister W. Graham

arxiv:astro-ph/0203291 v1 · 2002-03-19 · 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{HMW7Q2PADZYG27LEG62JH6I3ON}

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	2026-05-18T03:57:01.352745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b2df869e01e706d7d6437b493f91b7361f6fa65859ef5b613d9ed1437de00d0

Aliases

arxiv: astro-ph/0203291 · arxiv_version: astro-ph/0203291v1 · doi: 10.48550/arxiv.astro-ph/0203291 · pith_short_12: HMW7Q2PADZYG · pith_short_16: HMW7Q2PADZYG27LE · pith_short_8: HMW7Q2PA

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/HMW7Q2PADZYG27LEG62JH6I3ON \
  | 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: 3b2df869e01e706d7d6437b493f91b7361f6fa65859ef5b613d9ed1437de00d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56d8552475920033ddb4a6e86c79c9b6aa73fbf114f31c053dd97bc9c68c89be",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-03-19T02:44:41Z",
    "title_canon_sha256": "d461c487bcbd3f1c6159e4dceac346b711adfaeead71414d0edc2765d3457f48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0203291",
    "kind": "arxiv",
    "version": 1
  }
}