Pith Number

pith:6AI2AJEB

pith:2013:6AI2AJEBTUP7ST7XA7OVKYQ7PC

not attested not anchored not stored refs pending

On Optimal Disc Covers and a New Characterization of the Steiner Center

Alfred M. Bruckstein, Yael Yankelevsky

arxiv:1312.0233 v2 · 2013-12-01 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6AI2AJEBTUP7ST7XA7OVKYQ7PC}

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	2026-05-18T00:13:19.878199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f011a024819d1ff94ff707dd55621f7890fe5bbef1703d9316fdfaa1d9e886b4

Aliases

arxiv: 1312.0233 · arxiv_version: 1312.0233v2 · doi: 10.48550/arxiv.1312.0233 · pith_short_12: 6AI2AJEBTUP7 · pith_short_16: 6AI2AJEBTUP7ST7X · pith_short_8: 6AI2AJEB

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/6AI2AJEBTUP7ST7XA7OVKYQ7PC \
  | 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: f011a024819d1ff94ff707dd55621f7890fe5bbef1703d9316fdfaa1d9e886b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44b95fa14a07d7b8904d62ac41cc6c7fa43ce5bd14f09ea108c9186b0983f295",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2013-12-01T15:18:17Z",
    "title_canon_sha256": "15358e9aeeeb388cee8b0f7d33e27f27338665b70ae045562747fd806f1af667"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.0233",
    "kind": "arxiv",
    "version": 2
  }
}