Pith Number

pith:DCEQLQUL

pith:2006:DCEQLQUL3GC6Y2FA7HEJ37X2UE

not attested not anchored not stored refs pending

Collapse of the Primordial Gas Clouds in the Presence of UV Radiation Field

1) ((1) Institute of Physics, H.Niewodniczanski Institute of Nuclear Physics, Jagiellonian University, Jaroslaw Stasielak (1), Krakow, Marek Kutschera (2, Poland), Poland (2) Astrophysics Division, Slawomir Stachniewicz (2)

arxiv:astro-ph/0612071 v1 · 2006-12-04 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DCEQLQUL3GC6Y2FA7HEJ37X2UE}

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	2026-05-18T01:40:28.583564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

188905c28bd985ec68a0f9c89dfefaa113a36a9e1a908bacc8cb80c860295928

Aliases

arxiv: astro-ph/0612071 · arxiv_version: astro-ph/0612071v1 · doi: 10.48550/arxiv.astro-ph/0612071 · pith_short_12: DCEQLQUL3GC6 · pith_short_16: DCEQLQUL3GC6Y2FA · pith_short_8: DCEQLQUL

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/DCEQLQUL3GC6Y2FA7HEJ37X2UE \
  | 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: 188905c28bd985ec68a0f9c89dfefaa113a36a9e1a908bacc8cb80c860295928

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72689c2e536e62e0e39d2d7573a28b41c801fed5312cae92ed2ae1d8eb82a4f0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-04T10:48:05Z",
    "title_canon_sha256": "647014f1c3022d3c9c8ac494b8e8313232f4eaf0f00943b50ff3ea0a70260c4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612071",
    "kind": "arxiv",
    "version": 1
  }
}