Pith Number

pith:MH3M6PBF

pith:2017:MH3M6PBFE5E2EQ54NEYDYOZXIZ

not attested not anchored not stored refs pending

A characterization of Linearizable instances of the Quadratic Traveling Salesman Problem

Abraham P. Punnen, Brad D. Woods, Matthias Walter

arxiv:1708.07217 v3 · 2017-08-23 · cs.DM · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MH3M6PBFE5E2EQ54NEYDYOZXIZ}

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	2026-05-18T00:19:03.776391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61f6cf3c252749a243bc69303c3b374671400ffa4e839b82737bf4b4f5aed22e

Aliases

arxiv: 1708.07217 · arxiv_version: 1708.07217v3 · doi: 10.48550/arxiv.1708.07217 · pith_short_12: MH3M6PBFE5E2 · pith_short_16: MH3M6PBFE5E2EQ54 · pith_short_8: MH3M6PBF

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/MH3M6PBFE5E2EQ54NEYDYOZXIZ \
  | 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: 61f6cf3c252749a243bc69303c3b374671400ffa4e839b82737bf4b4f5aed22e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ce5ce711a5ec09f885f1eadd95702b0c1b5edf93c2350d89d9847721b625a99",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-08-23T23:40:52Z",
    "title_canon_sha256": "1782996e7feb7488eff169e016a0316a2a5578e4100a495fc650b4e6378e030d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.07217",
    "kind": "arxiv",
    "version": 3
  }
}