Pith Number

pith:7UG3REHM

pith:2011:7UG3REHMC3LA7VNKHMMUO3Y44F

not attested not anchored not stored refs pending

A constant limiting mass scale for flat early-type galaxies from z=1 to z=0: density evolves but shapes do not

(2) Leiden Obs., Arjen van der Wel (1), Bradford Holden, Hans-Walter Rix (1), Marijn Franx (2) ((1) MPIA-Heidelberg, University of Leiden)

arxiv:1108.6086 v2 · 2011-08-30 · 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{7UG3REHMC3LA7VNKHMMUO3Y44F}

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	2026-05-18T02:00:44.361739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd0db890ec16d60fd5aa3b19476f1ce15a24a5ecb2d911fac03421404b879ee9

Aliases

arxiv: 1108.6086 · arxiv_version: 1108.6086v2 · doi: 10.48550/arxiv.1108.6086 · pith_short_12: 7UG3REHMC3LA · pith_short_16: 7UG3REHMC3LA7VNK · pith_short_8: 7UG3REHM

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/7UG3REHMC3LA7VNKHMMUO3Y44F \
  | 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: fd0db890ec16d60fd5aa3b19476f1ce15a24a5ecb2d911fac03421404b879ee9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f916bf8bc19c2af669328f5c52c0ae51211434e4a2e3cc0d96d7cf41a8a25b0e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-30T21:41:16Z",
    "title_canon_sha256": "75248ac4f2f59c9b5ad0db2c2fac04ed287c1d983d400fb70a9f65e5f4d99a62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.6086",
    "kind": "arxiv",
    "version": 2
  }
}