Pith Number

pith:SARBJWVR

pith:2015:SARBJWVRTIWFV2EXRXVL5WVLH3

not attested not anchored not stored refs pending

Approximability of TSP on Power Law Graphs

Marek Karpinski, Mathias Hauptmann, Mikael Gast

arxiv:1509.03976 v1 · 2015-09-14 · cs.DS · cs.CC · cs.DM · math.CO · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SARBJWVRTIWFV2EXRXVL5WVLH3}

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	2026-05-18T01:33:08.587088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

902214dab19a2c5ae8978deabedaab3ee5310b3d7be28424aaed3a6a3b54cdc8

Aliases

arxiv: 1509.03976 · arxiv_version: 1509.03976v1 · doi: 10.48550/arxiv.1509.03976 · pith_short_12: SARBJWVRTIWF · pith_short_16: SARBJWVRTIWFV2EX · pith_short_8: SARBJWVR

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/SARBJWVRTIWFV2EXRXVL5WVLH3 \
  | 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: 902214dab19a2c5ae8978deabedaab3ee5310b3d7be28424aaed3a6a3b54cdc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16b90f162012862cfa06795375dd1bea4992f82843506dc12d40724e4ee0a78d",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM",
      "math.CO",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-09-14T07:50:27Z",
    "title_canon_sha256": "23ee0321df1f02c67b4e6ff657d158fde25d94024416a5ae8ea7d04ffd02e314"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03976",
    "kind": "arxiv",
    "version": 1
  }
}