Pith Number

pith:5ZMLUV6Q

pith:2015:5ZMLUV6QVY2BUNOAHD3BSY4QDN

not attested not anchored not stored refs pending

Approximation Algorithm for Minimum Weight $(k,m)$-CDS Problem in Unit Disk Graph

Ding-Zhu Du, Yishuo Shi, Zhao Zhang

arxiv:1508.05515 v2 · 2015-08-22 · cs.DM · 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{5ZMLUV6QVY2BUNOAHD3BSY4QDN}

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	2026-05-17T23:57:00.989107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee58ba57d0ae341a35c038f61963901b76dee9b4bdc8c99f24a8458fab934ba9

Aliases

arxiv: 1508.05515 · arxiv_version: 1508.05515v2 · doi: 10.48550/arxiv.1508.05515 · pith_short_12: 5ZMLUV6QVY2B · pith_short_16: 5ZMLUV6QVY2BUNOA · pith_short_8: 5ZMLUV6Q

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/5ZMLUV6QVY2BUNOAHD3BSY4QDN \
  | 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: ee58ba57d0ae341a35c038f61963901b76dee9b4bdc8c99f24a8458fab934ba9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9df0911b80bad829fcd527247071e9c8c3fb21151a3a99ae4ca1d153bb6e555",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-08-22T13:57:44Z",
    "title_canon_sha256": "85e5efaf9cc2d6f8a8d05e0c50c47ce6c5913b865d643f785c997288cc54acc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.05515",
    "kind": "arxiv",
    "version": 2
  }
}