Pith Number

pith:4IYWLNIZ

pith:2025:4IYWLNIZ3WIPH5JJUNGHZKXRZO

not attested not anchored not stored refs pending

On Solving the Assignment Problem with Conflicts

Derek H. Smith, Roberto Montemanni

arxiv:2506.04274 v1 · 2025-06-03 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4IYWLNIZ3WIPH5JJUNGHZKXRZO}

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	2026-07-05T11:16:11.389803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e23165b519dd90f3f529a34c7caaf1cba4c073c57ddecebfbc369283ff6f439e

Aliases

arxiv: 2506.04274 · arxiv_version: 2506.04274v1 · doi: 10.48550/arxiv.2506.04274 · pith_short_12: 4IYWLNIZ3WIP · pith_short_16: 4IYWLNIZ3WIPH5JJ · pith_short_8: 4IYWLNIZ

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/4IYWLNIZ3WIPH5JJUNGHZKXRZO \
  | 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: e23165b519dd90f3f529a34c7caaf1cba4c073c57ddecebfbc369283ff6f439e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1e5b891e5d8554e94ee222d9fdd256449a79a138f2e08fdece478dee3be409d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-06-03T19:26:42Z",
    "title_canon_sha256": "97819faa8d889458b7fe6eb75a4c3c3f398925052567166f351fff987760fdaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.04274",
    "kind": "arxiv",
    "version": 1
  }
}