Pith Number

pith:74W5MEGT

pith:2019:74W5MEGT2KH5HMNX6CTPDKRZWN

not attested not anchored not stored refs pending

An Optimal Geometric Condition on Domains for Boundary Differentiability of Solutions of Elliptic Equations

Dongsheng Li, Kai Zhang

arxiv:1901.06062 v1 · 2019-01-18 · 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{74W5MEGT2KH5HMNX6CTPDKRZWN}

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	2026-05-17T23:56:04.689441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff2dd610d3d28fd3b1b7f0a6f1aa39b376acef6f3e885bbacdb7ed7d2aa1c70f

Aliases

arxiv: 1901.06062 · arxiv_version: 1901.06062v1 · doi: 10.48550/arxiv.1901.06062 · pith_short_12: 74W5MEGT2KH5 · pith_short_16: 74W5MEGT2KH5HMNX · pith_short_8: 74W5MEGT

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/74W5MEGT2KH5HMNX6CTPDKRZWN \
  | 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: ff2dd610d3d28fd3b1b7f0a6f1aa39b376acef6f3e885bbacdb7ed7d2aa1c70f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3af180b1db1376a96c1a382475d05eaa1d750247bb136fec65f6628c8f6d5e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-01-18T02:29:09Z",
    "title_canon_sha256": "9a3a0ac4a2544c11c4b394e0223c56e204a327e69de19412f9b1bc233dfaef8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06062",
    "kind": "arxiv",
    "version": 1
  }
}