Pith Number

pith:AW7TUGVC

pith:2016:AW7TUGVCRZPW4CM6IDDOYQZQCA

not attested not anchored not stored refs pending

The obstacle problem for the fractional Laplacian with critical drift

Xavier Fern\'andez-Real, Xavier Ros-Oton

arxiv:1610.04200 v2 · 2016-10-13 · 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{AW7TUGVCRZPW4CM6IDDOYQZQCA}

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	2026-05-18T00:49:06.484041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05bf3a1aa28e5f6e099e40c6ec4330103708d03a06a65da2d3a511db9f894a4f

Aliases

arxiv: 1610.04200 · arxiv_version: 1610.04200v2 · doi: 10.48550/arxiv.1610.04200 · pith_short_12: AW7TUGVCRZPW · pith_short_16: AW7TUGVCRZPW4CM6 · pith_short_8: AW7TUGVC

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/AW7TUGVCRZPW4CM6IDDOYQZQCA \
  | 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: 05bf3a1aa28e5f6e099e40c6ec4330103708d03a06a65da2d3a511db9f894a4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47e260c91e91bf19183a0946c1654c1722b1b0955b441b237e9d2ce2cce1f1be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2016-10-13T19:02:49Z",
    "title_canon_sha256": "94238c37d4d68f5c993f93f9a055cd6bacf6c87189f457f5f7a70246901cec58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.04200",
    "kind": "arxiv",
    "version": 2
  }
}