Pith Number

pith:SIEGHGG3

pith:2009:SIEGHGG3XCXHAXQXSWHDFY5J37

not attested not anchored not stored refs pending

New Approximation Algorithms for Minimum Enclosing Convex Shapes

(2) Purdue University, (3) University of Alberta), Ankan Saha (1), S.V.N. Vishwanathan (2), Xinhua Zhang (3) ((1) University of Chicago

arxiv:0909.1062 v4 · 2009-09-05 · cs.CG · cs.DS · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SIEGHGG3XCXHAXQXSWHDFY5J37}

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	2026-05-18T04:40:56.153381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92086398dbb8ae705e17958e32e3a9dfc2d2e284aab18dbb4b3d2666d92fefd1

Aliases

arxiv: 0909.1062 · arxiv_version: 0909.1062v4 · doi: 10.48550/arxiv.0909.1062 · pith_short_12: SIEGHGG3XCXH · pith_short_16: SIEGHGG3XCXHAXQX · pith_short_8: SIEGHGG3

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/SIEGHGG3XCXHAXQXSWHDFY5J37 \
  | 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: 92086398dbb8ae705e17958e32e3a9dfc2d2e284aab18dbb4b3d2666d92fefd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06a3da33922ff479bc85bd76a9e220c93453ceaa205fc7f15dfa44f7a4b6dcbd",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2009-09-05T23:24:32Z",
    "title_canon_sha256": "679f69d414cd628d12e026f679a7d4682c4c8c69822607ce036f7602ed31196d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1062",
    "kind": "arxiv",
    "version": 4
  }
}