Pith Number

pith:HMYQ4VZE

pith:2009:HMYQ4VZEI5Y3FNUPMWZMACEBSE

not attested not anchored not stored refs pending

The First Generation of Virgo Cluster Dwarf Elliptical Galaxies?

2), (2) Univ. of Oulu, (3) Institute of Astronomy, (4) Chungnam National University, (5) MPA, (6) LERMA, (7) Univ. of Hertfordshire), C. Mastropietro (6), G. Hensler (3), J. Janz (1, Observatoire de Paris, O. Hielscher (1), R. Kotulla (7) ((1) ARI/ZAH, S.-C. Rey (4), S. Kim (4), S. Paudel (1), S. Weinmann (5), T. Lisker (1), Univ. of Heidelberg, Vienna University

arxiv:0910.3209 v1 · 2009-10-16 · 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{HMYQ4VZEI5Y3FNUPMWZMACEBSE}

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	2026-05-18T02:34:18.539389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b310e57244771b2b68f65b2c008819115ea07621bce3a925505f6665f4fa4cf

Aliases

arxiv: 0910.3209 · arxiv_version: 0910.3209v1 · doi: 10.48550/arxiv.0910.3209 · pith_short_12: HMYQ4VZEI5Y3 · pith_short_16: HMYQ4VZEI5Y3FNUP · pith_short_8: HMYQ4VZE

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/HMYQ4VZEI5Y3FNUPMWZMACEBSE \
  | 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: 3b310e57244771b2b68f65b2c008819115ea07621bce3a925505f6665f4fa4cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2827dc8ae711c95adc45cef8bc49583e10a5a14f55872f076839b82f4b98d342",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-16T20:00:05Z",
    "title_canon_sha256": "25cca025a500969a6a42a69ba50c064800e9cfcde9d18a67a1a3a3a8fc0a3d8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.3209",
    "kind": "arxiv",
    "version": 1
  }
}