Pith Number

pith:T4CCTZG5

pith:1998:T4CCTZG5RWYYOCDXHBNWZQI22F

not attested not anchored not stored refs pending

The Lyman Alpha Forest in the Spectra of QSOs

Michael Rauch (Caltech)

arxiv:astro-ph/9806286 v1 · 1998-06-22 · 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{T4CCTZG5RWYYOCDXHBNWZQI22F}

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

4 papers in Pith

Machine Learning Techniques for Astrophysics and Cosmology: Lyman-$\alpha$ forest

The Case for Astrons

Lya2pcf: an efficient pipeline to estimate two- and three-point correlation functions of the Lyman-$\alpha$ forest

The Gravitational Spectral Radio Forest: A Signature of Primordial Black Holes

Receipt and verification

First computed	2026-07-04T16:06:47.329421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f0429e4dd8db1870877385b6cc11ad1502958bc7800d716fd8377f8f24e5d74

Aliases

arxiv: astro-ph/9806286 · arxiv_version: astro-ph/9806286v1 · doi: 10.48550/arxiv.astro-ph/9806286 · pith_short_12: T4CCTZG5RWYY · pith_short_16: T4CCTZG5RWYYOCDX · pith_short_8: T4CCTZG5

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/T4CCTZG5RWYYOCDXHBNWZQI22F \
  | 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: 9f0429e4dd8db1870877385b6cc11ad1502958bc7800d716fd8377f8f24e5d74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7ad6662e87b0659654917cf09ae5876628f35b5f8271219df4022e83f07cbc0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-06-22T04:46:27Z",
    "title_canon_sha256": "5fafb610f3575a4a2d31037fa768a5c79c851e942917e84f97d2c05c508800c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9806286",
    "kind": "arxiv",
    "version": 1
  }
}