Pith Number

pith:53MY3WN4

pith:2011:53MY3WN4KQ3T3A7CC4IQQ73WW3

not attested not anchored not stored refs pending

Convex Hulls of Quadratically Parameterized Sets With Quadratic Constraints

Jiawang Nie

arxiv:1110.2526 v1 · 2011-10-11 · 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{53MY3WN4KQ3T3A7CC4IQQ73WW3}

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	2026-05-18T04:11:08.702974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eed98dd9bc54373d83e21711087f76b6f56afc9c230c44ee8e1c2f517ba36ca0

Aliases

arxiv: 1110.2526 · arxiv_version: 1110.2526v1 · doi: 10.48550/arxiv.1110.2526 · pith_short_12: 53MY3WN4KQ3T · pith_short_16: 53MY3WN4KQ3T3A7C · pith_short_8: 53MY3WN4

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/53MY3WN4KQ3T3A7CC4IQQ73WW3 \
  | 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: eed98dd9bc54373d83e21711087f76b6f56afc9c230c44ee8e1c2f517ba36ca0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75da4294cbf8bb57588039a54ebc1c205378d304d4a20ac00fec758e70524401",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2011-10-11T23:02:49Z",
    "title_canon_sha256": "a7adeb1408d3075c09fc5a79e55746b6fc54ee10c5fe024b1e6e76519a2316d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2526",
    "kind": "arxiv",
    "version": 1
  }
}