Pith Number

pith:OIOQMEM6

pith:2021:OIOQMEM6OCCMKG6MMQM6GJEJS5

not attested not anchored not stored refs pending

New instances for maximum weight independent set from a vehicle routing application

Alexander Noe, Andrew V. Goldberg, Mauricio G. C. Resende, Nikos Parotsidis, Quico Spaen, Yuanyuan Dong

arxiv:2105.12623 v2 · 2021-05-26 · cs.DS · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OIOQMEM6OCCMKG6MMQM6GJEJS5}

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	2026-07-05T02:44:07.216437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

721d06119e7084c51bcc6419e32489976bf95a6d7f80f4f38355be99a8c0715c

Aliases

arxiv: 2105.12623 · arxiv_version: 2105.12623v2 · doi: 10.48550/arxiv.2105.12623 · pith_short_12: OIOQMEM6OCCM · pith_short_16: OIOQMEM6OCCMKG6M · pith_short_8: OIOQMEM6

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/OIOQMEM6OCCMKG6MMQM6GJEJS5 \
  | 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: 721d06119e7084c51bcc6419e32489976bf95a6d7f80f4f38355be99a8c0715c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec055d020282438af8544c34d669ccc4218ee849e7a57b2befa6d88fdf3f4c8a",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2021-05-26T15:23:25Z",
    "title_canon_sha256": "d1df754ac3882fa417f5c20e65d942cb4128284a6e1e8c0950d111bf1117de00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.12623",
    "kind": "arxiv",
    "version": 2
  }
}