Pith Number

pith:PZPWYGN4

pith:2015:PZPWYGN4LPPTC5ILN7M7GG77C7

not attested not anchored not stored refs pending

Facial Reduction and SDP Methods for Systems of Polynomial Equations

Fei Wang, Greg Reid, Henry Wolkowicz, Wenyuan Wu

arxiv:1504.00931 v1 · 2015-04-01 · math.OC · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PZPWYGN4LPPTC5ILN7M7GG77C7}

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	2026-05-18T02:19:35.524594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e5f6c19bc5bdf31750b6fd9f31bff17f894251daa42ae0a9338252084ad0875

Aliases

arxiv: 1504.00931 · arxiv_version: 1504.00931v1 · doi: 10.48550/arxiv.1504.00931 · pith_short_12: PZPWYGN4LPPT · pith_short_16: PZPWYGN4LPPTC5IL · pith_short_8: PZPWYGN4

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/PZPWYGN4LPPTC5ILN7M7GG77C7 \
  | 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: 7e5f6c19bc5bdf31750b6fd9f31bff17f894251daa42ae0a9338252084ad0875

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "118af01780dfd27b442f5f5387d886a8084bcdd8b90c78926cb9b05897c5cfa9",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-04-01T18:13:14Z",
    "title_canon_sha256": "57963c2addd22711d46053acaec48343999770c2520a8cab6e2c44c63a22719e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.00931",
    "kind": "arxiv",
    "version": 1
  }
}