Pith Number

pith:OKF22ONW

pith:2017:OKF22ONWBBWS3F6QJEIPSA7DL7

not attested not anchored not stored refs pending

Polylogarithmic approximation for minimum planarization (almost)

Anastasios Sidiropoulos, Ken-ichi Kawarabayashi

arxiv:1708.04723 v1 · 2017-08-15 · 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{OKF22ONWBBWS3F6QJEIPSA7DL7}

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	2026-05-18T00:37:58.086294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

728bad39b6086d2d97d04910f903e35fe300aa8259966959b6b1743eeb782a1b

Aliases

arxiv: 1708.04723 · arxiv_version: 1708.04723v1 · doi: 10.48550/arxiv.1708.04723 · pith_short_12: OKF22ONWBBWS · pith_short_16: OKF22ONWBBWS3F6Q · pith_short_8: OKF22ONW

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/OKF22ONWBBWS3F6QJEIPSA7DL7 \
  | 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: 728bad39b6086d2d97d04910f903e35fe300aa8259966959b6b1743eeb782a1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfe68cfe649e497cdc6ecb2c8bf93213a74bc088d896b75b43fd236fc7dfbff2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-08-15T23:54:36Z",
    "title_canon_sha256": "5c37dfc69657bacdaf363c3541cc77dea42212d612300e9578cbcf0721047fc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04723",
    "kind": "arxiv",
    "version": 1
  }
}