Pith Number

pith:SOW4GZGY

pith:2014:SOW4GZGYMKFHF2I4JK3JPMZO6N

not attested not anchored not stored refs pending

Optimal regularity of solutions to the obstacle problem for the fractional Laplacian with drift

Arshak Petrosyan, Camelia A. Pop

arxiv:1403.5015 v1 · 2014-03-20 · 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{SOW4GZGYMKFHF2I4JK3JPMZO6N}

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	2026-05-18T02:55:58.316165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93adc364d8628a72e91c4ab697b32ef34980f8747a73531df865ec059985816c

Aliases

arxiv: 1403.5015 · arxiv_version: 1403.5015v1 · doi: 10.48550/arxiv.1403.5015 · pith_short_12: SOW4GZGYMKFH · pith_short_16: SOW4GZGYMKFHF2I4 · pith_short_8: SOW4GZGY

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/SOW4GZGYMKFHF2I4JK3JPMZO6N \
  | 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: 93adc364d8628a72e91c4ab697b32ef34980f8747a73531df865ec059985816c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f459e686e74f29f6da37ade08f47771b8356312d94bc06586290a3e6bead3f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-03-20T01:17:36Z",
    "title_canon_sha256": "44a83b7170cf94bd9c6bba1f6dcacab9b764f228235c77325913eb884653ebc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5015",
    "kind": "arxiv",
    "version": 1
  }
}