Pith Number

pith:NUNIAOAI

pith:2014:NUNIAOAI4NNLTLW5NWKUXNLAMY

not attested not anchored not stored refs pending

Optimal regularity for the obstacle problem for the $p$-Laplacian

Erik Lindgren, Henrik Shahgholian, John Andersson

arxiv:1402.4953 v2 · 2014-02-20 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NUNIAOAI4NNLTLW5NWKUXNLAMY}

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	2026-05-18T02:21:51.931982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d1a803808e35ab9aedd6d954bb56066127db2c4719cdafd23c9cb2af9b199af

Aliases

arxiv: 1402.4953 · arxiv_version: 1402.4953v2 · doi: 10.48550/arxiv.1402.4953 · pith_short_12: NUNIAOAI4NNL · pith_short_16: NUNIAOAI4NNLTLW5 · pith_short_8: NUNIAOAI

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/NUNIAOAI4NNLTLW5NWKUXNLAMY \
  | 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: 6d1a803808e35ab9aedd6d954bb56066127db2c4719cdafd23c9cb2af9b199af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "952b8ab270047bb09491d5669ca976edfa831e7bc3ec389d2920317c04abf03a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-02-20T10:42:21Z",
    "title_canon_sha256": "23d815b1becfc774d53f25fc84545accb1f5229299292851266a8dbb00cc02b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.4953",
    "kind": "arxiv",
    "version": 2
  }
}