Pith Number

pith:SY2QABVA

pith:2011:SY2QABVA36SXWHW2ZRAQX7NDSZ

not attested not anchored not stored refs pending

Two Multivehicle Routing Problems with Unit-Time Windows

Barry Wittman, Greg N. Frederickson

arxiv:1101.3953 v1 · 2011-01-20 · 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{SY2QABVA36SXWHW2ZRAQX7NDSZ}

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	2026-05-18T04:31:20.776844Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96350006a0dfa57b1edacc410bfda3967a8be8196a617d4856e8ca1cbea4d93c

Aliases

arxiv: 1101.3953 · arxiv_version: 1101.3953v1 · doi: 10.48550/arxiv.1101.3953 · pith_short_12: SY2QABVA36SX · pith_short_16: SY2QABVA36SXWHW2 · pith_short_8: SY2QABVA

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/SY2QABVA36SXWHW2ZRAQX7NDSZ \
  | 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: 96350006a0dfa57b1edacc410bfda3967a8be8196a617d4856e8ca1cbea4d93c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea18a5ad74c611fb49d3835b93bea9fc6d355644576d6f3440b0189146d43b40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-01-20T16:39:00Z",
    "title_canon_sha256": "0fcbadf4b6c0776f058badcc5050e69271c5de51a6f051a11c4d440b7232ea2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3953",
    "kind": "arxiv",
    "version": 1
  }
}