Pith Number

pith:CJEMH36L

pith:2018:CJEMH36LNMG5CVETHGXQLFTFVN

not attested not anchored not stored refs pending

Fast Approximations for Metric-TSP via Linear Programming

Chandra Chekuri, Kent Quanrud

arxiv:1802.01242 v1 · 2018-02-05 · 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{CJEMH36LNMG5CVETHGXQLFTFVN}

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	2026-05-18T00:24:26.967789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1248c3efcb6b0dd1549339af059665ab4e244b604d7b90b925e1372054c1a828

Aliases

arxiv: 1802.01242 · arxiv_version: 1802.01242v1 · doi: 10.48550/arxiv.1802.01242 · pith_short_12: CJEMH36LNMG5 · pith_short_16: CJEMH36LNMG5CVET · pith_short_8: CJEMH36L

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/CJEMH36LNMG5CVETHGXQLFTFVN \
  | 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: 1248c3efcb6b0dd1549339af059665ab4e244b604d7b90b925e1372054c1a828

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f013e695fa8bc823d01e26e4c7804d8983e9c538f695a46b0d9233a2d593d070",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-02-05T02:48:36Z",
    "title_canon_sha256": "422addcec57ba6d67fc8f6e3570fce654cc5fa616a20ebad6e329a5ca50492de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01242",
    "kind": "arxiv",
    "version": 1
  }
}