Pith Number

pith:W6FJNMVF

pith:2015:W6FJNMVFT54E446XRAVAULEFOV

not attested not anchored not stored refs pending

Error analysis of approximation algorithm for standard bi-quadratic programming

Chen Ling, Hongjin He, Liqun Qi

arxiv:1501.02871 v1 · 2015-01-13 · 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{W6FJNMVFT54E446XRAVAULEFOV}

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	2026-05-18T02:29:31.056202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b78a96b2a59f784e73d7882a0a2c857555d0d4043e0f459f34b0b8a7afe91347

Aliases

arxiv: 1501.02871 · arxiv_version: 1501.02871v1 · doi: 10.48550/arxiv.1501.02871 · pith_short_12: W6FJNMVFT54E · pith_short_16: W6FJNMVFT54E446X · pith_short_8: W6FJNMVF

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/W6FJNMVFT54E446XRAVAULEFOV \
  | 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: b78a96b2a59f784e73d7882a0a2c857555d0d4043e0f459f34b0b8a7afe91347

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0edab949db40ec9df3eebd431c57a1dfbdba4d874d499514303c8bd5ade08c87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-01-13T02:57:24Z",
    "title_canon_sha256": "3464695cf36ce14eba4e61e698f8feff899f104a7600f0f6f93fd2b680e8da4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02871",
    "kind": "arxiv",
    "version": 1
  }
}