Pith Number

pith:RVZRBJ7B

pith:2018:RVZRBJ7BY56NEHONPORDXQOO5J

not attested not anchored not stored refs pending

An improved upper bound on the integrality ratio for the $s$-$t$-path TSP

Jens Vygen, Vera Traub

arxiv:1808.10734 v2 · 2018-08-31 · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RVZRBJ7BY56NEHONPORDXQOO5J}

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	2026-05-17T23:39:58.343720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d7310a7e1c77cd21dcd7ba23bc1ceea6d9966924d6a4fe142af53a10763b7c7

Aliases

arxiv: 1808.10734 · arxiv_version: 1808.10734v2 · doi: 10.48550/arxiv.1808.10734 · pith_short_12: RVZRBJ7BY56N · pith_short_16: RVZRBJ7BY56NEHON · pith_short_8: RVZRBJ7B

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/RVZRBJ7BY56NEHONPORDXQOO5J \
  | 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: 8d7310a7e1c77cd21dcd7ba23bc1ceea6d9966924d6a4fe142af53a10763b7c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17f9da0a4b3d385c355986827f83d7993823de80cf8868b1cbac76d30f03a5de",
    "cross_cats_sorted": [
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-08-31T13:27:00Z",
    "title_canon_sha256": "1610a72bc3999155b1857c7f0771b515636d6d10d7a194b03c51241c64ef6f1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10734",
    "kind": "arxiv",
    "version": 2
  }
}