Pith Number

pith:2Q2JQI2R

pith:2009:2Q2JQI2R3AS53UWUOZBH6EW2DL

not attested not anchored not stored refs pending

The effect of dry mergers on the color-magnitude relation of early-type galaxies

Eric F. Bell, Rachel S. Somerville, Rosalind E. Skelton

arxiv:0905.4525 v1 · 2009-05-27 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2Q2JQI2R3AS53UWUOZBH6EW2DL}

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	2026-05-18T04:29:42.913947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d434982351d825ddd2d476427f12da1af95f912487fac8e2c1121969a64d353e

Aliases

arxiv: 0905.4525 · arxiv_version: 0905.4525v1 · doi: 10.48550/arxiv.0905.4525 · pith_short_12: 2Q2JQI2R3AS5 · pith_short_16: 2Q2JQI2R3AS53UWU · pith_short_8: 2Q2JQI2R

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/2Q2JQI2R3AS53UWUOZBH6EW2DL \
  | 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: d434982351d825ddd2d476427f12da1af95f912487fac8e2c1121969a64d353e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "790241566b3470c54070393366cb5c192520c2f5332f428b97e3ddcdc4d99bb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-27T22:09:44Z",
    "title_canon_sha256": "7fa97d5cfd4d4499fd40ccb77892e941a83b75f7d2a2d773eb56dfffb2e3d1ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4525",
    "kind": "arxiv",
    "version": 1
  }
}