Pith Number

pith:EMIRXZAQ

pith:2015:EMIRXZAQQPZXTPUNBTATZHRM6Z

not attested not anchored not stored refs pending

A $4/5$ - Approximation Algorithm for the Maximum Traveling Salesman Problem

Bartosz Rybicki, Jan Marcinkowski, Katarzyna Paluch, Szymon Dudycz

arxiv:1512.09236 v2 · 2015-12-31 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EMIRXZAQQPZXTPUNBTATZHRM6Z}

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	2026-05-18T01:18:52.301899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23111be41083f379be8d0cc13c9e2cf6794ea056dc72251dbc723192f0552d13

Aliases

arxiv: 1512.09236 · arxiv_version: 1512.09236v2 · doi: 10.48550/arxiv.1512.09236 · pith_short_12: EMIRXZAQQPZX · pith_short_16: EMIRXZAQQPZXTPUN · pith_short_8: EMIRXZAQ

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/EMIRXZAQQPZXTPUNBTATZHRM6Z \
  | 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: 23111be41083f379be8d0cc13c9e2cf6794ea056dc72251dbc723192f0552d13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a74ad6bd078a5a33044e3a03d09bc4561da72c5986085851bd03750eb8186d50",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-12-31T07:34:37Z",
    "title_canon_sha256": "a2a205aefa572a4a1b43eb5dc6424bfa17f14b9f4283675affe1b0377cce7861"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.09236",
    "kind": "arxiv",
    "version": 2
  }
}