Pith Number

pith:Q4LS4PDR

pith:2018:Q4LS4PDRNFQEZOEGE6DATSNSY6

not attested not anchored not stored refs pending

Iterated Greedy Algorithms for the Hop-Constrained Steiner Tree Problem

Bahram Sadeghi Bigham, Farzane Yahyanejad

arxiv:1808.06981 v1 · 2018-08-21 · 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{Q4LS4PDRNFQEZOEGE6DATSNSY6}

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	2026-05-18T00:07:38.507194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87172e3c7169604cb886278609c9b2c79825e9851dc4838c4df8850ef78cd84f

Aliases

arxiv: 1808.06981 · arxiv_version: 1808.06981v1 · doi: 10.48550/arxiv.1808.06981 · pith_short_12: Q4LS4PDRNFQE · pith_short_16: Q4LS4PDRNFQEZOEG · pith_short_8: Q4LS4PDR

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/Q4LS4PDRNFQEZOEGE6DATSNSY6 \
  | 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: 87172e3c7169604cb886278609c9b2c79825e9851dc4838c4df8850ef78cd84f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4daf210d30cea062becc47f09cdc9f1a4005574879c5df5ca3eb075bb637a15e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-08-21T15:57:31Z",
    "title_canon_sha256": "3ef91bacd24fd5d852ebc321fdb9299b12f915ad2912b4a97ba5992b3de7d948"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06981",
    "kind": "arxiv",
    "version": 1
  }
}