Pith Number

pith:BJUMPBIJ

pith:2017:BJUMPBIJOZAWDHBXY55C3BQJKS

not attested not anchored not stored refs pending

Structural Parameters, Tight Bounds, and Approximation for (k,r)-Center

Ioannis Katsikarelis, Michael Lampis, Vangelis Th. Paschos

arxiv:1704.08868 v4 · 2017-04-28 · cs.CC · 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{BJUMPBIJOZAWDHBXY55C3BQJKS}

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	2026-05-18T00:01:00.708486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a68c785097641619c37c77a2d860954891fb227e49654ea974d7a6a48417a35

Aliases

arxiv: 1704.08868 · arxiv_version: 1704.08868v4 · doi: 10.48550/arxiv.1704.08868 · pith_short_12: BJUMPBIJOZAW · pith_short_16: BJUMPBIJOZAWDHBX · pith_short_8: BJUMPBIJ

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/BJUMPBIJOZAWDHBXY55C3BQJKS \
  | 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: 0a68c785097641619c37c77a2d860954891fb227e49654ea974d7a6a48417a35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ac0b3713e161020bdf45dd5adff46e8d22ac7978e1cd2914913bcf2cf024953",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2017-04-28T10:34:16Z",
    "title_canon_sha256": "624e71f65b20921de213ebf6b9560a4718b180db1b2ef9fe4afc563db07727f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.08868",
    "kind": "arxiv",
    "version": 4
  }
}