Pith Number

pith:5Q3NPA7P

pith:2018:5Q3NPA7PCMNLAB2OQQGK322J7V

not attested not anchored not stored refs pending

A mass conserving mixed stress formulation for the Stokes equations

Jay Gopalakrishnan, Joachim Sch\"oberl, Philip L. Lederer

arxiv:1806.07173 v1 · 2018-06-19 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5Q3NPA7PCMNLAB2OQQGK322J7V}

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	2026-05-18T00:12:51.666327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec36d783ef131ab0074e840cadeb49fd4b2adc8b59f21cd33a469fa13afb3dac

Aliases

arxiv: 1806.07173 · arxiv_version: 1806.07173v1 · doi: 10.48550/arxiv.1806.07173 · pith_short_12: 5Q3NPA7PCMNL · pith_short_16: 5Q3NPA7PCMNLAB2O · pith_short_8: 5Q3NPA7P

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/5Q3NPA7PCMNLAB2OQQGK322J7V \
  | 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: ec36d783ef131ab0074e840cadeb49fd4b2adc8b59f21cd33a469fa13afb3dac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8f5452bda9bfd48014186437afd7bf3465970e41afed65f0f72e0aa183801f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-06-19T12:01:55Z",
    "title_canon_sha256": "19ea7e6de8be14a72921667b1c58547848d2e744bda86a3790f39dbca56876b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07173",
    "kind": "arxiv",
    "version": 1
  }
}