Pith Number

pith:TZKOPZ37

pith:2009:TZKOPZ37VLE67YRBBRY4UIGAV7

not attested not anchored not stored refs pending

The Many Manifestations of Downsizing: Hierarchical Galaxy Formation Models confront Observations

3), 4), 5), 7) ((1) Max-Planck-Institute fuer Astronomie, Baltimore; (6) INAF-Osservatorio Astronomico di Roma; (7) Dipartimento di Fisica, Fabio Fontanot (1), Gabriella De Lucia (2, Garching; (3) INAF-Osservatorio Astronomico di Trieste; (4) Dipartimento di Astronomia, Heidelberg; (2) Max-Planck-Institute fuer Astrophysik, Paola Santini (6, Pierluigi Monaco (3, Rachel S. Somerville (1, Universita' di Roma "La Sapienza"), Universita' di Trieste; (5) Space Telescope Science Institute

arxiv:0901.1130 v2 · 2009-01-08 · 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{TZKOPZ37VLE67YRBBRY4UIGAV7}

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	2026-05-18T02:15:02.867555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e54e7e77faac9efe2210c71ca20c0afcfe409d472371903c48420e262baefe2

Aliases

arxiv: 0901.1130 · arxiv_version: 0901.1130v2 · doi: 10.48550/arxiv.0901.1130 · pith_short_12: TZKOPZ37VLE6 · pith_short_16: TZKOPZ37VLE67YRB · pith_short_8: TZKOPZ37

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/TZKOPZ37VLE67YRBBRY4UIGAV7 \
  | 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: 9e54e7e77faac9efe2210c71ca20c0afcfe409d472371903c48420e262baefe2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da2145407d9f78929e10ae48ff4006761f12e363b1d3b8bc4c062925cf92f8cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-08T21:39:35Z",
    "title_canon_sha256": "3f1d3c599fa94eb49fc49cca48bf3c9e6b0fa0f22f4a550956739ac858b478e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1130",
    "kind": "arxiv",
    "version": 2
  }
}