Pith Number

pith:XQR6S46X

pith:2019:XQR6S46XBUZUANVZKFGVENNYCD

not attested not anchored not stored refs pending

Constant-Factor Approximation Algorithms for Parity-Constrained Facility Location Problems

Hyung-Chan An, Kangsan Kim, Yongho Shin

arxiv:1907.03129 v1 · 2019-07-06 · 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{XQR6S46XBUZUANVZKFGVENNYCD}

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	2026-05-17T23:41:18.858311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc23e973d70d334036b9514d5235b810dcada299142a041f12d488ad97922296

Aliases

arxiv: 1907.03129 · arxiv_version: 1907.03129v1 · doi: 10.48550/arxiv.1907.03129 · pith_short_12: XQR6S46XBUZU · pith_short_16: XQR6S46XBUZUANVZ · pith_short_8: XQR6S46X

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/XQR6S46XBUZUANVZKFGVENNYCD \
  | 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: bc23e973d70d334036b9514d5235b810dcada299142a041f12d488ad97922296

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30146c47cc7af108037c6d6a26289edeaa327545d3ba9ed66d18471e1f9ec8ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-06T14:20:06Z",
    "title_canon_sha256": "f68ab1c5feb8cc82976afdee0d0fdc885a7425de68cebf2a40b304e8efe64acf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03129",
    "kind": "arxiv",
    "version": 1
  }
}