Pith Number

pith:VBVPTRIF

pith:2019:VBVPTRIFZEU27ELFR6RBA5FLGL

not attested not anchored not stored refs pending

Iterated two-phase local search for the Set-Union Knapsack Problem

Jin-Kao Hao, Zequn Wei

arxiv:1903.04966 v2 · 2019-03-12 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VBVPTRIFZEU27ELFR6RBA5FLGL}

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	2026-05-17T23:51:25.471180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a86af9c505c929af91658fa21074ab32eaacf4c337d5edc2dfe2c924089a02a2

Aliases

arxiv: 1903.04966 · arxiv_version: 1903.04966v2 · doi: 10.48550/arxiv.1903.04966 · pith_short_12: VBVPTRIFZEU2 · pith_short_16: VBVPTRIFZEU27ELF · pith_short_8: VBVPTRIF

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/VBVPTRIFZEU27ELFR6RBA5FLGL \
  | 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: a86af9c505c929af91658fa21074ab32eaacf4c337d5edc2dfe2c924089a02a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "255ee54171475cf14ed81c88eea57e128918cd2ec7ae143c27d1c7237ad3bbda",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2019-03-12T14:48:24Z",
    "title_canon_sha256": "6e709df64688daa86b371739049c6cb3409ed70f40599ea0cf3c89a93db20e5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04966",
    "kind": "arxiv",
    "version": 2
  }
}