Pith Number

pith:4ACFTSAM

pith:2011:4ACFTSAMQ2CQJC2OF6GOJHBDVH

not attested not anchored not stored refs pending

A 2.75-Approximation Algorithm for the Unconstrained Traveling Tournament Problem

Ryuhei Miyashiro, Shinji Imahori, Tomomi Matsui

arxiv:1110.0620 v1 · 2011-10-04 · 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{4ACFTSAMQ2CQJC2OF6GOJHBDVH}

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	2026-05-18T01:22:54.529398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e00459c80c8685048b4e2f8ce49c23a9e0b24d527ba4ed8ef1911769756fea28

Aliases

arxiv: 1110.0620 · arxiv_version: 1110.0620v1 · doi: 10.48550/arxiv.1110.0620 · pith_short_12: 4ACFTSAMQ2CQ · pith_short_16: 4ACFTSAMQ2CQJC2O · pith_short_8: 4ACFTSAM

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/4ACFTSAMQ2CQJC2OF6GOJHBDVH \
  | 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: e00459c80c8685048b4e2f8ce49c23a9e0b24d527ba4ed8ef1911769756fea28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcbad454d5b97ec0d7d1ffa4da90c656d928f07b6defb2916ebd7448f3f0ee98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-10-04T09:35:21Z",
    "title_canon_sha256": "9d3d4d694693f6ee3772c9f63076b2a0782afdd6e6a6b22e7f4479e408cba44c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.0620",
    "kind": "arxiv",
    "version": 1
  }
}