Pith Number

pith:NBFVPV4G

pith:2017:NBFVPV4GGJ5G6EG4IKPFU3AKFB

not attested not anchored not stored refs pending

A Primal-Dual based Distributed Approximation Algorithm for Prize-Collecting Steiner Tree

Aris T. Pagourtzis, Parikshit Saikia, Sushanta Karmakar

arxiv:1710.07040 v2 · 2017-10-19 · cs.DC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NBFVPV4GGJ5G6EG4IKPFU3AKFB}

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	2026-05-18T00:22:58.250183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

684b57d786327a6f10dc429e5a6c0a28422f1307a262d2fdf47b406caa4b4a7f

Aliases

arxiv: 1710.07040 · arxiv_version: 1710.07040v2 · doi: 10.48550/arxiv.1710.07040 · pith_short_12: NBFVPV4GGJ5G · pith_short_16: NBFVPV4GGJ5G6EG4 · pith_short_8: NBFVPV4G

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/NBFVPV4GGJ5G6EG4IKPFU3AKFB \
  | 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: 684b57d786327a6f10dc429e5a6c0a28422f1307a262d2fdf47b406caa4b4a7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b53e0dbad56737f136ddb5b628a5990d1b07b17bbfc1d1483ce34cbeba35d4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2017-10-19T08:41:38Z",
    "title_canon_sha256": "c50f25683dd7785d202466cb0d7ff500171303986e084744eb509f0f95acae9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.07040",
    "kind": "arxiv",
    "version": 2
  }
}