Pith Number

pith:55DZV55E

pith:1995:55DZV55EU4JHZNI6GMLDO3Q7IS

not attested not anchored not stored refs pending

Hydrodynamic Simulations of Galaxy Formation. II. Photoionization and the Formation of Low Mass Galaxies

Anne A. Thoul, David H. Weinberg

arxiv:astro-ph/9510154 v1 · 1995-10-31 · 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{55DZV55EU4JHZNI6GMLDO3Q7IS}

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	2026-05-18T04:15:27.473837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef479af7a4a7127cb51e3316376e1f44b412bcb2686c61e31e05a155bb018533

Aliases

arxiv: astro-ph/9510154 · arxiv_version: astro-ph/9510154v1 · doi: 10.48550/arxiv.astro-ph/9510154 · pith_short_12: 55DZV55EU4JH · pith_short_16: 55DZV55EU4JHZNI6 · pith_short_8: 55DZV55E

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/55DZV55EU4JHZNI6GMLDO3Q7IS \
  | 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: ef479af7a4a7127cb51e3316376e1f44b412bcb2686c61e31e05a155bb018533

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94d0a6b833d7cb0b18738801ea17ef77770897862413f0130454d490d62b8158",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-10-31T18:25:30Z",
    "title_canon_sha256": "f79884a7bb2e06929aa9369f0ef37334988ad7f4668f664fcb91bbc805ad9384"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9510154",
    "kind": "arxiv",
    "version": 1
  }
}