Pith Number

pith:QDCF6WHZ

pith:2008:QDCF6WHZMR2MP6N445LIJ22CRO

not attested not anchored not stored refs pending

The friction factor of two-dimensional rough-boundary turbulent soap film flows

Nicholas Guttenberg, Nigel Goldenfeld

arxiv:0808.1451 v4 · 2008-08-11 · physics.flu-dyn · cond-mat.stat-mech · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDCF6WHZMR2MP6N445LIJ22CRO}

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	2026-05-18T02:15:43.475682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80c45f58f96474c7f9bce75684eb428bb81d29854d3c9425912c4ac7a5cc5556

Aliases

arxiv: 0808.1451 · arxiv_version: 0808.1451v4 · doi: 10.48550/arxiv.0808.1451 · pith_short_12: QDCF6WHZMR2M · pith_short_16: QDCF6WHZMR2MP6N4 · pith_short_8: QDCF6WHZ

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/QDCF6WHZMR2MP6N445LIJ22CRO \
  | 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: 80c45f58f96474c7f9bce75684eb428bb81d29854d3c9425912c4ac7a5cc5556

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e47bdc6841692ee11195bb33fcd7bd929be1010a5209860b6568941842d1cbca",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "nlin.CD"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2008-08-11T06:33:42Z",
    "title_canon_sha256": "68c034a5cd9d7a5e1d3fa64416fb78f4f9cc426081874a1835edb9e561ca8632"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.1451",
    "kind": "arxiv",
    "version": 4
  }
}