Pith Number

pith:B6JO4SWN

pith:2013:B6JO4SWNUXDBDUTVCTPHQQYEN5

not attested not anchored not stored refs pending

A framework for automated PDE-constrained optimisation

P. E. Farrell, S. W. Funke

arxiv:1302.3894 v1 · 2013-02-15 · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B6JO4SWNUXDBDUTVCTPHQQYEN5}

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	2026-05-18T03:33:24.950456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f92ee4acda5c611d27514de7843046f509bf6b17a46de739bee1c178ffa78cb

Aliases

arxiv: 1302.3894 · arxiv_version: 1302.3894v1 · doi: 10.48550/arxiv.1302.3894 · pith_short_12: B6JO4SWNUXDB · pith_short_16: B6JO4SWNUXDBDUTV · pith_short_8: B6JO4SWN

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/B6JO4SWNUXDBDUTVCTPHQQYEN5 \
  | 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: 0f92ee4acda5c611d27514de7843046f509bf6b17a46de739bee1c178ffa78cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f141a2e34bd84fc317e2a0fedad8f2cb8963c37af918990a4f84892a2fa0c4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2013-02-15T21:30:51Z",
    "title_canon_sha256": "9e5b8c8e0f06d4c1d8d7710fd1deff04875ec60736439a82b2566552191db9fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.3894",
    "kind": "arxiv",
    "version": 1
  }
}