Pith Number

pith:GQHAPUDN

pith:2009:GQHAPUDN5IUIFC6RCGVB74F33F

not attested not anchored not stored refs pending

Alternative diagnostic diagrams and the "forgotten" population of weak line galaxies in the SDSS

2), (2) LUTH, 3), (3) USP, A. Mateus (1), Brazil, Brazil), France, G. Stasinska (2), L. Sodre Jr.(3); ((1) UFSC, M. S. Schlickmann (1, N. Vale Asari (1, Observatoire de Paris, R. Cid Fernandes (1), W. Schoenell (1)

arxiv:0912.1643 v1 · 2009-12-09 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GQHAPUDN5IUIFC6RCGVB74F33F}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:10:25.458475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

340e07d06dea28828bd111aa1ff0bbd9527ef22e0dc86c104561ad5ca79a26b6

Aliases

arxiv: 0912.1643 · arxiv_version: 0912.1643v1 · doi: 10.48550/arxiv.0912.1643 · pith_short_12: GQHAPUDN5IUI · pith_short_16: GQHAPUDN5IUIFC6R · pith_short_8: GQHAPUDN

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/GQHAPUDN5IUIFC6RCGVB74F33F \
  | 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: 340e07d06dea28828bd111aa1ff0bbd9527ef22e0dc86c104561ad5ca79a26b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3897173d8bf5880fce74ed8e92805efe8b258d4e7122801382b043c3b12355e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-09T01:29:19Z",
    "title_canon_sha256": "de3f07572420e029183ae1503a1951ec2a4d40591cdfc57dbafa45e8d2e67859"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1643",
    "kind": "arxiv",
    "version": 1
  }
}