Pith Number

pith:RCDFUHEJ

pith:2009:RCDFUHEJGQPIZOQGAOEZL5EMCO

not attested not anchored not stored refs pending

Adaptive Mesh Refinement for Characteristic Grids

Jonathan Thornburg

arxiv:0909.0036 v3 · 2009-08-31 · gr-qc · physics.comp-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{RCDFUHEJGQPIZOQGAOEZL5EMCO}

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	2026-05-18T02:24:47.473144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88865a1c89341e8cba06038995f48c13b69da44d6b483ce6925b13da729948cb

Aliases

arxiv: 0909.0036 · arxiv_version: 0909.0036v3 · doi: 10.48550/arxiv.0909.0036 · pith_short_12: RCDFUHEJGQPI · pith_short_16: RCDFUHEJGQPIZOQG · pith_short_8: RCDFUHEJ

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/RCDFUHEJGQPIZOQGAOEZL5EMCO \
  | 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: 88865a1c89341e8cba06038995f48c13b69da44d6b483ce6925b13da729948cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8189d480157e99c6ff9ac13ca61d44eca52146f9d5e3d263c428011e49e0d83",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-08-31T20:21:27Z",
    "title_canon_sha256": "89990705585cd4ac23bbffc472b77cf7b5d3a7056487a94e2018dadb13c16afd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0036",
    "kind": "arxiv",
    "version": 3
  }
}