Pith Number

pith:6YO4WTKW

pith:2019:6YO4WTKW3ICPFUNBFZSKEH7NG7

not attested not anchored not stored refs pending

Hypersonic limit of two-dimensional steady compressible Euler flows passing a straight wedge

Aifang Qu, Hairong Yuan, Qin Zhao

arxiv:1904.03360 v1 · 2019-04-06 · math.AP · math-ph · math.MP · physics.flu-dyn

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6YO4WTKW3ICPFUNBFZSKEH7NG7}

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	2026-05-17T23:49:13.721697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f61dcb4d56da04f2d1a12e64a21fed37d7207f68ae6bc94a0cafb9e595658217

Aliases

arxiv: 1904.03360 · arxiv_version: 1904.03360v1 · doi: 10.48550/arxiv.1904.03360 · pith_short_12: 6YO4WTKW3ICP · pith_short_16: 6YO4WTKW3ICPFUNB · pith_short_8: 6YO4WTKW

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/6YO4WTKW3ICPFUNBFZSKEH7NG7 \
  | 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: f61dcb4d56da04f2d1a12e64a21fed37d7207f68ae6bc94a0cafb9e595658217

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0915253dd3ac19243ec14bed8f3ba00bab4e2e547f1374c8b9159ad4bb2bf9be",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-04-06T04:55:21Z",
    "title_canon_sha256": "88741c4f0066046a3388001a9f7d0f9a51a26cf9b0be6086aa82a1401340b4af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03360",
    "kind": "arxiv",
    "version": 1
  }
}