Pith Number

pith:HD6U2G4M

pith:2019:HD6U2G4MYESXXAA4OPCF5AURJF

not attested not anchored not stored refs pending

Approximate convexity principles and applications to PDEs in convex domains

Claudia Bucur, Marco Squassina

arxiv:1902.06419 v1 · 2019-02-18 · 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{HD6U2G4MYESXXAA4OPCF5AURJF}

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	2026-05-17T23:53:45.566852Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38fd4d1b8cc1257b801c73c45e829149497f4d63fe65b677f0bf7e47881f713d

Aliases

arxiv: 1902.06419 · arxiv_version: 1902.06419v1 · doi: 10.48550/arxiv.1902.06419 · pith_short_12: HD6U2G4MYESX · pith_short_16: HD6U2G4MYESXXAA4 · pith_short_8: HD6U2G4M

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/HD6U2G4MYESXXAA4OPCF5AURJF \
  | 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: 38fd4d1b8cc1257b801c73c45e829149497f4d63fe65b677f0bf7e47881f713d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e590c771da3f1b585300687d1e413d3d697a1276794b96c16723e2377cad8f3c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-02-18T06:33:05Z",
    "title_canon_sha256": "9152f6a3001c63f7aaa5ccceb548a123ef67b2a8a6fc6066ab28507657de2095"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06419",
    "kind": "arxiv",
    "version": 1
  }
}