Pith Number

pith:BUN2L5HZ

pith:2014:BUN2L5HZAR6W5X2FPKE6IRFJGN

not attested not anchored not stored refs pending

Semidefinite representations of non-compact convex sets

Chu Wang, Feng Guo, Lihong Zhi

arxiv:1401.1917 v2 · 2014-01-09 · 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{BUN2L5HZAR6W5X2FPKE6IRFJGN}

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	2026-05-18T02:58:21.337832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d1ba5f4f9047d6edf457a89e444a9336f5a5cba74b6cdf8dfef96e6bd3b9423

Aliases

arxiv: 1401.1917 · arxiv_version: 1401.1917v2 · doi: 10.48550/arxiv.1401.1917 · pith_short_12: BUN2L5HZAR6W · pith_short_16: BUN2L5HZAR6W5X2F · pith_short_8: BUN2L5HZ

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/BUN2L5HZAR6W5X2FPKE6IRFJGN \
  | 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: 0d1ba5f4f9047d6edf457a89e444a9336f5a5cba74b6cdf8dfef96e6bd3b9423

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34926ea4a0e61317e2acafc4f12c114cea54c706620abe6a00af2c2d728ed4e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-01-09T08:00:08Z",
    "title_canon_sha256": "c2331f1c89e81c516f8563464b7ac9cda62a0f40ff0aa0c5b85dd71b6ec8b75c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1917",
    "kind": "arxiv",
    "version": 2
  }
}