Pith Number

pith:DBZHJDKD

pith:2018:DBZHJDKD5PNQELIXDNCX4MBOEB

not attested not anchored not stored refs pending

On the complexity of sequentially lifting cover inequalities for the knapsack polytope

Wei-Kun Chen, Yu-Hong Dai

arxiv:1811.10010 v2 · 2018-11-25 · math.OC

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

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	2026-05-17T23:51:43.700039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1872748d43ebdb022d171b457e302e204d3aad75e007866cc453c4bbfa1ff305

Aliases

arxiv: 1811.10010 · arxiv_version: 1811.10010v2 · doi: 10.48550/arxiv.1811.10010 · pith_short_12: DBZHJDKD5PNQ · pith_short_16: DBZHJDKD5PNQELIX · pith_short_8: DBZHJDKD

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/DBZHJDKD5PNQELIXDNCX4MBOEB \
  | 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: 1872748d43ebdb022d171b457e302e204d3aad75e007866cc453c4bbfa1ff305

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e22daf0b967d40e175ec56fbe8dabd7207b5101379273ccc141f5410cf64f853",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-11-25T13:38:10Z",
    "title_canon_sha256": "20c467af6111d839c24ea1e2811b726dfc88de0171c8cd88edc61fea7ab1c5c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.10010",
    "kind": "arxiv",
    "version": 2
  }
}