Pith Number

pith:C57BPRBK

pith:2015:C57BPRBKXFPRLXBXOKFJNMTOC7

not attested not anchored not stored refs pending

A Polynomial-Time Approximation Scheme for The Airplane Refueling Problem

Danny Segev, Iftah Gamzu

arxiv:1512.06353 v1 · 2015-12-20 · 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{C57BPRBKXFPRLXBXOKFJNMTOC7}

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	2026-05-18T01:24:00.768777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

177e17c42ab95f15dc37728a96b26e17d17fd68dd5dbaa37a9151e5d6a4d0269

Aliases

arxiv: 1512.06353 · arxiv_version: 1512.06353v1 · doi: 10.48550/arxiv.1512.06353 · pith_short_12: C57BPRBKXFPR · pith_short_16: C57BPRBKXFPRLXBX · pith_short_8: C57BPRBK

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/C57BPRBKXFPRLXBXOKFJNMTOC7 \
  | 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: 177e17c42ab95f15dc37728a96b26e17d17fd68dd5dbaa37a9151e5d6a4d0269

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3a54363abff1d3a223e458bbd872c87977bf3f8bcc208b54ec2d02c2b47f8d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-12-20T10:58:08Z",
    "title_canon_sha256": "bcb1a59aa38f60c8f6c6dcd3fa88241756c1d636e499a918b7065e276f0d4668"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06353",
    "kind": "arxiv",
    "version": 1
  }
}