Pith Number

pith:BE3LUDX5

pith:2017:BE3LUDX5KZS75EULYZB7VTHSO7

not attested not anchored not stored refs pending

Model updating using sum of squares (SOS) optimization to minimize modal dynamic residuals

Dan Li, Xinjun Dong, Yang Wang

arxiv:1709.02499 v2 · 2017-09-08 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BE3LUDX5KZS75EULYZB7VTHSO7}

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	2026-05-18T00:06:41.527866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0936ba0efd5665fe928bc643faccf277f915c658730025e0c768769b5f4a55d7

Aliases

arxiv: 1709.02499 · arxiv_version: 1709.02499v2 · doi: 10.48550/arxiv.1709.02499 · pith_short_12: BE3LUDX5KZS7 · pith_short_16: BE3LUDX5KZS75EUL · pith_short_8: BE3LUDX5

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/BE3LUDX5KZS75EULYZB7VTHSO7 \
  | 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: 0936ba0efd5665fe928bc643faccf277f915c658730025e0c768769b5f4a55d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d34a894b3b5e56c221368ee03caed97583fe3ff62f3cc503eef5ee6cccfaa79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-09-08T01:40:40Z",
    "title_canon_sha256": "838171926774fd9ba9a4bd7c7839e73bae685384b971b534e8b7c57b6e296692"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.02499",
    "kind": "arxiv",
    "version": 2
  }
}