Pith Number

pith:PV25A7YY

pith:2022:PV25A7YYHTPGU355Y66PBTJM6W

not attested not anchored not stored refs pending

Improving Primal Heuristics for Mixed Integer Programming Problems based on Problem Reduction: A Learning-based Approach

Bo Bai, Fan Zhang, Jiazheng Wang, Ling Shi, Lingying Huang, Wei Huo, Xiaomeng Chen

arxiv:2209.13217 v1 · 2022-09-27 · math.OC · cs.SY · eess.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PV25A7YYHTPGU355Y66PBTJM6W}

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	2026-07-05T05:01:08.030380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d75d07f183cde6a6fbdc7bcf0cd2cf581d760c1dc900e7ee4f2af6d8c32ec5c

Aliases

arxiv: 2209.13217 · arxiv_version: 2209.13217v1 · doi: 10.48550/arxiv.2209.13217 · pith_short_12: PV25A7YYHTPG · pith_short_16: PV25A7YYHTPGU355 · pith_short_8: PV25A7YY

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/PV25A7YYHTPGU355Y66PBTJM6W \
  | 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: 7d75d07f183cde6a6fbdc7bcf0cd2cf581d760c1dc900e7ee4f2af6d8c32ec5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba4e77b5cc830358687b47a0f3594af26bb0ffe1952433a25031727b137260c6",
    "cross_cats_sorted": [
      "cs.SY",
      "eess.SY"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-09-27T07:36:30Z",
    "title_canon_sha256": "4913a999a1a52d877e2057cc0c6b9cac0007c487083721e9eefe811e890f4c4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.13217",
    "kind": "arxiv",
    "version": 1
  }
}