Pith Number

pith:PYPO2W4S

pith:2019:PYPO2W4SLZVQ3CFZXTD3LJKD5G

not attested not anchored not stored refs pending

Boundary Layer Study for an Ocean Related System with a Small Viscosity Parameter

Wenshu Zhou, Xiaodan Wei, Xulong Qin, Xu Zhao

arxiv:1903.09234 v1 · 2019-03-21 · 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{PYPO2W4SLZVQ3CFZXTD3LJKD5G}

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	2026-05-17T23:50:40.269376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e1eed5b925e6b0d88b9bcc7b5a543e99fa3b3a836f25f5cdbb1c943a080cdca

Aliases

arxiv: 1903.09234 · arxiv_version: 1903.09234v1 · doi: 10.48550/arxiv.1903.09234 · pith_short_12: PYPO2W4SLZVQ · pith_short_16: PYPO2W4SLZVQ3CFZ · pith_short_8: PYPO2W4S

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/PYPO2W4SLZVQ3CFZXTD3LJKD5G \
  | 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: 7e1eed5b925e6b0d88b9bcc7b5a543e99fa3b3a836f25f5cdbb1c943a080cdca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e91458d6a9c4104a84966dc50152abb85b22cd461e7e16c56ae648a3c999b93",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-03-21T20:44:18Z",
    "title_canon_sha256": "40f0ab565c8b8920034eedb310e3c9da546c8de35dac4b41612e27b51760e307"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09234",
    "kind": "arxiv",
    "version": 1
  }
}