Pith Number

pith:LUPE3JYF

pith:2012:LUPE3JYFV7JFN3WN46DR3FRTWN

not attested not anchored not stored refs pending

An Embedding Technique for the Solution of Reaction-Diffusion Equations on Algebraic Surfaces with Isolated Singularities

Parousia Rockstroh, Steven J. Ruuth, Thomas M\"arz

arxiv:1211.5298 v1 · 2012-11-22 · math.NA · math.AG · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LUPE3JYFV7JFN3WN46DR3FRTWN}

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	2026-05-18T03:40:04.782415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d1e4da705afd256eecde7871d9633b37c53098f05befb4cc072847197f3d231

Aliases

arxiv: 1211.5298 · arxiv_version: 1211.5298v1 · doi: 10.48550/arxiv.1211.5298 · pith_short_12: LUPE3JYFV7JF · pith_short_16: LUPE3JYFV7JFN3WN · pith_short_8: LUPE3JYF

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/LUPE3JYFV7JFN3WN46DR3FRTWN \
  | 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: 5d1e4da705afd256eecde7871d9633b37c53098f05befb4cc072847197f3d231

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "443ccd0114b000cc0f9f88f034d543eb779d2217c4d81649f3d8addf6666ca73",
    "cross_cats_sorted": [
      "math.AG",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-11-22T14:54:56Z",
    "title_canon_sha256": "5f5d48a80c322430df0c27ea60193b365a6024dd9a17a6f9fc7cd2b12ef81946"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.5298",
    "kind": "arxiv",
    "version": 1
  }
}