Pith Number

pith:O7WP5AKV

pith:2012:O7WP5AKVA66WMZ6TRSIRQDLA43

not attested not anchored not stored refs pending

Sparse Dynamics for Partial Differential Equations

Cory Hauck, Hayden Schaeffer, Russel Caflisch, Stanley Osher

arxiv:1212.4132 v1 · 2012-12-17 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O7WP5AKVA66WMZ6TRSIRQDLA43}

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	2026-05-18T01:52:31.376112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77ecfe815507bd6667d38c91180d60e6e2a1790f25e46d27396678ff14fe7e85

Aliases

arxiv: 1212.4132 · arxiv_version: 1212.4132v1 · doi: 10.48550/arxiv.1212.4132 · pith_short_12: O7WP5AKVA66W · pith_short_16: O7WP5AKVA66WMZ6T · pith_short_8: O7WP5AKV

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/O7WP5AKVA66WMZ6TRSIRQDLA43 \
  | 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: 77ecfe815507bd6667d38c91180d60e6e2a1790f25e46d27396678ff14fe7e85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "172809aee6e32f5e15a99aac3b94ce6f993552be4be97322855795c3701fa559",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-12-17T20:41:35Z",
    "title_canon_sha256": "5ef732a1ff1cff45b3dc168d336c7a5b43aedb4a57df0c95340e51bba25a1522"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4132",
    "kind": "arxiv",
    "version": 1
  }
}