Pith Number

pith:PSH57D3N

pith:2017:PSH57D3NJVVZAHYF7HAME6IY4P

not attested not anchored not stored refs pending

Quadratic Unconstrained Binary Optimization Problem Preprocessing: Theory and Empirical Analysis

Fred Glover, Mark Lewis

arxiv:1705.09844 v1 · 2017-05-27 · 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{PSH57D3NJVVZAHYF7HAME6IY4P}

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	2026-05-18T00:43:34.392751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c8fdf8f6d4d6b901f05f9c0c27918e3ee841e7d79fb5a453592ff870a986336

Aliases

arxiv: 1705.09844 · arxiv_version: 1705.09844v1 · doi: 10.48550/arxiv.1705.09844 · pith_short_12: PSH57D3NJVVZ · pith_short_16: PSH57D3NJVVZAHYF · pith_short_8: PSH57D3N

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/PSH57D3NJVVZAHYF7HAME6IY4P \
  | 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: 7c8fdf8f6d4d6b901f05f9c0c27918e3ee841e7d79fb5a453592ff870a986336

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "113d99b409e879e56df18486ce4132437d24d4b3a444cfe4ff5a17f2f41c72c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2017-05-27T17:09:56Z",
    "title_canon_sha256": "f827637eabb9cf04188865e1c7ec232bc7cb566a0ba7667679991de4803c5b48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.09844",
    "kind": "arxiv",
    "version": 1
  }
}