Pith Number

pith:YGKA2BTR

pith:2014:YGKA2BTR6WCX4VBU6IE6PF4ZRC

not attested not anchored not stored refs pending

Improved Approximation Algorithms for Box Contact Representations

Alexander Wolff, Joachim Spoerhase, Martin Fink, Michael A. Bekos, Philipp Kindermann, Sergey Pupyrev, Stephen Kobourov, Thomas C. van Dijk

arxiv:1403.4861 v2 · 2014-03-19 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YGKA2BTR6WCX4VBU6IE6PF4ZRC}

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	2026-05-18T00:06:21.168382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1940d0671f5857e5434f209e7979988a7304085fddd1ca3048572b7aa6be7d6

Aliases

arxiv: 1403.4861 · arxiv_version: 1403.4861v2 · doi: 10.48550/arxiv.1403.4861 · pith_short_12: YGKA2BTR6WCX · pith_short_16: YGKA2BTR6WCX4VBU · pith_short_8: YGKA2BTR

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/YGKA2BTR6WCX4VBU6IE6PF4ZRC \
  | 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: c1940d0671f5857e5434f209e7979988a7304085fddd1ca3048572b7aa6be7d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05b2260ec05edc4b66d0541d77ddaca7138697f8dc2a467f2839a2d30682a5a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-03-19T15:57:24Z",
    "title_canon_sha256": "9d87a904e1d8add8622fe3e90837bb948d78e1e8a233141df11998a436736465"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4861",
    "kind": "arxiv",
    "version": 2
  }
}