Pith Number

pith:Q5GTQAD2

pith:2026:Q5GTQAD2OGTONQYLULURTWNUZE

not attested not anchored not stored refs pending

Preconditioning for near-contacts in large 2D Stokes flows: a locally compressed method of fundamental solutions

Alex H. Barnett, Anna Broms, Anna-Karin Tornberg

arxiv:2606.11273 v1 · 2026-06-09 · math.NA · cs.NA · 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{Q5GTQAD2OGTONQYLULURTWNUZE}

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	2026-06-11T00:08:16.059707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

874d38007a71a6e6c30ba2e919d9b4c9007bd41d703881305cf89b6c8274350b

Aliases

arxiv: 2606.11273 · arxiv_version: 2606.11273v1 · doi: 10.48550/arxiv.2606.11273 · pith_short_12: Q5GTQAD2OGTO · pith_short_16: Q5GTQAD2OGTONQYL · pith_short_8: Q5GTQAD2

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/Q5GTQAD2OGTONQYLULURTWNUZE \
  | 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: 874d38007a71a6e6c30ba2e919d9b4c9007bd41d703881305cf89b6c8274350b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "443b298f8a11ada52877db8691b0bb4dd59014ff0fc2fc753f95bf4c3a31fe29",
    "cross_cats_sorted": [
      "cs.NA",
      "physics.flu-dyn"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-09T09:02:41Z",
    "title_canon_sha256": "f1b3f36dcc91496dce11a2394b15acc9546391f432a07f9900ea074dd7e22717"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.11273",
    "kind": "arxiv",
    "version": 1
  }
}