Pith Number

pith:GNQIUM4T

pith:2013:GNQIUM4TEE7B762CABQMJBUCQG

not attested not anchored not stored refs pending

Chemical enrichment of Damped Lyman Alpha systems as a direct constraint on Population III star formation

Elisabeth Vangioni (IAP), Emmanuel Rollinde (IAP), Girish Kulkarni (MPIA), Joseph F. Hennawi (MPIA)

arxiv:1301.4201 v2 · 2013-01-17 · 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{GNQIUM4TEE7B762CABQMJBUCQG}

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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

1 paper in Pith

Cosmic evolution of the helium and oxygen abundances in type 2 Active Galactic Nuclei: Helium-loud AGNs

Receipt and verification

First computed	2026-05-18T01:52:06.127577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33608a3393213e1ffb420060c4868281ae4734f210ca18ee62c3f48cf8a53178

Aliases

arxiv: 1301.4201 · arxiv_version: 1301.4201v2 · doi: 10.48550/arxiv.1301.4201 · pith_short_12: GNQIUM4TEE7B · pith_short_16: GNQIUM4TEE7B762C · pith_short_8: GNQIUM4T

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/GNQIUM4TEE7B762CABQMJBUCQG \
  | 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: 33608a3393213e1ffb420060c4868281ae4734f210ca18ee62c3f48cf8a53178

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecf35066083fb4108db317c4df29777f62773c15fa997ff98e7cfab60f9acdaf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-17T19:45:14Z",
    "title_canon_sha256": "a16892900fdf3030776367452dea89ca5325d8411614da630b486443c3278a65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4201",
    "kind": "arxiv",
    "version": 2
  }
}