Pith Number

pith:OTH5GKPI

pith:2019:OTH5GKPIXLH4Q6CR4PKSKXAQOZ

not attested not anchored not stored refs pending

Geometric regularity for elliptic equations in double-divergence form

Edgard A. Pimentel, Makson S. Santos, Raimundo Leit\~ao

arxiv:1904.08856 v1 · 2019-04-18 · 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{OTH5GKPIXLH4Q6CR4PKSKXAQOZ}

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	2026-05-17T23:48:12.746438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74cfd329e8bacfc87851e3d5255c10764e52e66631bb97982e73f22d9034e233

Aliases

arxiv: 1904.08856 · arxiv_version: 1904.08856v1 · doi: 10.48550/arxiv.1904.08856 · pith_short_12: OTH5GKPIXLH4 · pith_short_16: OTH5GKPIXLH4Q6CR · pith_short_8: OTH5GKPI

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/OTH5GKPIXLH4Q6CR4PKSKXAQOZ \
  | 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: 74cfd329e8bacfc87851e3d5255c10764e52e66631bb97982e73f22d9034e233

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b2f94c37ae14a533e08ebf6bbef7fe281d64302200ac8d37f890dd1993bd08f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-04-18T15:56:45Z",
    "title_canon_sha256": "05d8f07a7423c56243c6087f5e4311d1f6249d3ce81996ab2f6bb8873c37c256"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08856",
    "kind": "arxiv",
    "version": 1
  }
}