Pith Number

pith:HSBRIG4K

pith:2018:HSBRIG4KCAPUMZ4SZRK6SA6PHX

not attested not anchored not stored refs pending

Representations of quadratic combinatorial optimization problems: A case study using the quadratic set covering problem

Abraham P. Punnen, Pooja Pandey

arxiv:1802.00897 v2 · 2018-02-03 · math.OC · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSBRIG4KCAPUMZ4SZRK6SA6PHX}

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	2026-05-18T00:22:44.197025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c83141b8a101f466792cc55e903cf3dfe31714b8a759edf1c8486914b515264

Aliases

arxiv: 1802.00897 · arxiv_version: 1802.00897v2 · doi: 10.48550/arxiv.1802.00897 · pith_short_12: HSBRIG4KCAPU · pith_short_16: HSBRIG4KCAPUMZ4S · pith_short_8: HSBRIG4K

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/HSBRIG4KCAPUMZ4SZRK6SA6PHX \
  | 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: 3c83141b8a101f466792cc55e903cf3dfe31714b8a759edf1c8486914b515264

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ff4ac8e91f71e9b667cd273b67dd2eb9dc43b0be767ee5ba0757365e0b032a5",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-02-03T02:39:36Z",
    "title_canon_sha256": "67c9e7a8edc214588db7fd25ca0d7e6f18c88e08e8e573e34f4275f3d3ed0b07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00897",
    "kind": "arxiv",
    "version": 2
  }
}