Pith Number

pith:QXF4OG7V

pith:2018:QXF4OG7VR3L72CTE7XPMJXOF5C

not attested not anchored not stored refs pending

A new parameterization for the concentration flux using the fractional calculus to model the dispersion of contaminants in the Planetary Boundary Layer

A. G. Goulart, J. M. S. Suarez, M. J. Lazo

arxiv:1812.02038 v1 · 2018-11-30 · physics.ao-ph · 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{QXF4OG7VR3L72CTE7XPMJXOF5C}

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	2026-05-17T23:57:37.122983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85cbc71bf58ed7fd0a64fddec4ddc5e8a545f5d4e1c521012feedf7b2573a4fb

Aliases

arxiv: 1812.02038 · arxiv_version: 1812.02038v1 · doi: 10.48550/arxiv.1812.02038 · pith_short_12: QXF4OG7VR3L7 · pith_short_16: QXF4OG7VR3L72CTE · pith_short_8: QXF4OG7V

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/QXF4OG7VR3L72CTE7XPMJXOF5C \
  | 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: 85cbc71bf58ed7fd0a64fddec4ddc5e8a545f5d4e1c521012feedf7b2573a4fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeab147e449918fa3bcd68fec4a231e8722141c0136827afdb056116115edc55",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2018-11-30T17:56:06Z",
    "title_canon_sha256": "66ef40e6aa81e051ece1a2aea0ebe3110381912ddc1af7079a5937fe556580db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02038",
    "kind": "arxiv",
    "version": 1
  }
}