Pith Number

pith:QDMCOPOZ

pith:2009:QDMCOPOZMZJEJMQYLIXZ4GJTWZ

not attested not anchored not stored refs pending

A Field-length based refinement criterion for adaptive mesh simulations of the interstellar medium

Oliver Gressel

arxiv:0902.0260 v1 · 2009-02-02 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDMCOPOZMZJEJMQYLIXZ4GJTWZ}

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	2026-05-18T02:14:54.680986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80d8273dd9665244b2185a2f9e1933b67168deef3f5f7f5d84025d4c5441f205

Aliases

arxiv: 0902.0260 · arxiv_version: 0902.0260v1 · doi: 10.48550/arxiv.0902.0260 · pith_short_12: QDMCOPOZMZJE · pith_short_16: QDMCOPOZMZJEJMQY · pith_short_8: QDMCOPOZ

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/QDMCOPOZMZJEJMQYLIXZ4GJTWZ \
  | 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: 80d8273dd9665244b2185a2f9e1933b67168deef3f5f7f5d84025d4c5441f205

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc7813b3a9dabe1f24d6dddc69a76b58ac31ae5bc8109891b5ec191c63375127",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-02T12:08:20Z",
    "title_canon_sha256": "5304fe16a802505ccd7b312a09f7dd2a7ed66e3f7f2f4a0902209e92718caeea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0260",
    "kind": "arxiv",
    "version": 1
  }
}