Pith Number

pith:VGV7GPDT

pith:2011:VGV7GPDTRD2SAGKNGEQS7SLUV2

not attested not anchored not stored refs pending

Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies

Astrophysics), Chung-Pei Ma (UC Berkeley), Douglas O. Richstone (UM Ann Arbor), Dunlap Institute for Astronomy, James R. Graham (UC Berkeley, Jeremy D. Murphy (UT Austin), Karl Gebhardt (UT Austin), Nicholas J. McConnell (UC Berkeley), (NOAO), Shelley A. Wright (UC Berkeley), Tod R. Lauer

arxiv:1112.1078 v1 · 2011-12-05 · 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{VGV7GPDTRD2SAGKNGEQS7SLUV2}

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.

Cited by

1 paper in Pith

Nuclear Activity and Host Galaxy Properties of Low-Luminosity AGN Identified from VLA Observations

Receipt and verification

First computed	2026-05-18T04:06:56.345777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9abf33c7388f520194d31212fc974ae812d860d135e80f310169e42aa6fed55

Aliases

arxiv: 1112.1078 · arxiv_version: 1112.1078v1 · doi: 10.48550/arxiv.1112.1078 · pith_short_12: VGV7GPDTRD2S · pith_short_16: VGV7GPDTRD2SAGKN · pith_short_8: VGV7GPDT

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/VGV7GPDTRD2SAGKNGEQS7SLUV2 \
  | 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: a9abf33c7388f520194d31212fc974ae812d860d135e80f310169e42aa6fed55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0af8e13d32f70fb940b4c723f9587cae3d5831a1005b7a3f428a1cb3a1a2abf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-12-05T21:00:06Z",
    "title_canon_sha256": "addbbfca94012334f04f2698e3873d932f1b539618a0d5ffb163de2e0c5072a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1078",
    "kind": "arxiv",
    "version": 1
  }
}