Pith Number

pith:BQT6D6MR

pith:2009:BQT6D6MRK54NLPAI5WHUP466IM

not attested not anchored not stored refs pending

A convergent mixed method for the Stokes approximation of viscous compressible flow

Kenneth Karlsen, Trygve Karper

arxiv:0911.1870 v1 · 2009-11-10 · math.NA · cs.NA · 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{BQT6D6MRK54NLPAI5WHUP466IM}

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	2026-06-03T23:06:30.554413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c27e1f9915778d5bc08ed8f47f3de43059af878aba9e6bf2d5b94aa6bb36621

Aliases

arxiv: 0911.1870 · arxiv_version: 0911.1870v1 · doi: 10.48550/arxiv.0911.1870 · pith_short_12: BQT6D6MRK54N · pith_short_16: BQT6D6MRK54NLPAI · pith_short_8: BQT6D6MR

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/BQT6D6MRK54NLPAI5WHUP466IM \
  | 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: 0c27e1f9915778d5bc08ed8f47f3de43059af878aba9e6bf2d5b94aa6bb36621

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff08c0498c8844de8a564ab6576f2fd7575953bac629d5e4f87f0e705df3c314",
    "cross_cats_sorted": [
      "cs.NA",
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-11-10T10:22:32Z",
    "title_canon_sha256": "ecebdfdcbbc78fae0650c3fd2ab6432bd896017ffe4baaef87fd4c8c2836c691"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1870",
    "kind": "arxiv",
    "version": 1
  }
}