Pith Number

pith:VYUZJ3UA

pith:2014:VYUZJ3UAHXJ2FCICEQMZQLUFMR

not attested not anchored not stored refs pending

An L1 Penalty Method for General Obstacle Problems

Giang Tran, Hayden Schaeffer, Stanley J. Osher, William M. Feldman

arxiv:1404.1370 v1 · 2014-04-04 · 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{VYUZJ3UAHXJ2FCICEQMZQLUFMR}

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	2026-05-18T02:54:46.338601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae2994ee803dd3a289022419982e85646daa5f94550bc42831830d8065f0eb78

Aliases

arxiv: 1404.1370 · arxiv_version: 1404.1370v1 · doi: 10.48550/arxiv.1404.1370 · pith_short_12: VYUZJ3UAHXJ2 · pith_short_16: VYUZJ3UAHXJ2FCIC · pith_short_8: VYUZJ3UA

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/VYUZJ3UAHXJ2FCICEQMZQLUFMR \
  | 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: ae2994ee803dd3a289022419982e85646daa5f94550bc42831830d8065f0eb78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f515c4ced36a83c683d23190dcce3d34bf6423bf4b319b360a0407cec655fa3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-04-04T18:40:37Z",
    "title_canon_sha256": "30ccd45fd2eef1ddb85c2d2165e0edcb2d6d18baaae3c2c94be4c2a0f2f794a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1370",
    "kind": "arxiv",
    "version": 1
  }
}