Pith Number

pith:SD7THKHD

pith:2009:SD7THKHD3VEBAFHC3DBJ6XB5MX

not attested not anchored not stored refs pending

Evolution of the Early-Type Galaxy Fraction in Clusters since z = 0.8

Alfonso Aragon-Salamanca, Anja von der Linden, Bianca M. Poggianti, Bo Milvang-Jensen, Claire Halliday, Dennis Zaritsky, Douglas Clowe, Gabriella De Lucia, Gregory H. Rudnick, Julianne J. Dalcanton, Luc Simard, Pascale Jablonka, Roberto P. Saglia, Roser Pello, Simon D. M. White, Vandana Desai

arxiv:0910.1612 v1 · 2009-10-08 · 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{SD7THKHD3VEBAFHC3DBJ6XB5MX}

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	2026-05-18T02:11:25.354429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90ff33a8e3dd481014e2d8c29f5c3d65ebc2cb5419d4078156fd4f572c9d9fc2

Aliases

arxiv: 0910.1612 · arxiv_version: 0910.1612v1 · doi: 10.48550/arxiv.0910.1612 · pith_short_12: SD7THKHD3VEB · pith_short_16: SD7THKHD3VEBAFHC · pith_short_8: SD7THKHD

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/SD7THKHD3VEBAFHC3DBJ6XB5MX \
  | 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: 90ff33a8e3dd481014e2d8c29f5c3d65ebc2cb5419d4078156fd4f572c9d9fc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc5385c6feb363714094b0096dd90ea9e805a9a425cd8465d5ac79546c1d9739",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-08T20:48:01Z",
    "title_canon_sha256": "e1404ea8575d181cf9fa72bf82b97b5f39d3356e550c9c0420f8e3d8b04333e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1612",
    "kind": "arxiv",
    "version": 1
  }
}