Pith Number

pith:Q3RSL25N

pith:2025:Q3RSL25N2XEFBP6EPBSVTBEWOL

not attested not anchored not stored refs pending

A matheuristic for solving the single row facility layout problem

Markus Sinnl, Thomas Pammer

arxiv:2506.09793 v1 · 2025-06-11 · 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{Q3RSL25N2XEFBP6EPBSVTBEWOL}

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	2026-07-05T11:19:57.059358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86e325ebadd5c850bfc4786559849672c9fcafdeadc7b199903d3557e6f52f9b

Aliases

arxiv: 2506.09793 · arxiv_version: 2506.09793v1 · doi: 10.48550/arxiv.2506.09793 · pith_short_12: Q3RSL25N2XEF · pith_short_16: Q3RSL25N2XEFBP6E · pith_short_8: Q3RSL25N

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/Q3RSL25N2XEFBP6EPBSVTBEWOL \
  | 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: 86e325ebadd5c850bfc4786559849672c9fcafdeadc7b199903d3557e6f52f9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04f122ea55198b76614b9f045b879fecba3c3983c7852f4a7ac2de6ba1f006b3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-06-11T14:36:53Z",
    "title_canon_sha256": "66acada97df4f40bb03883cb1f561455d8cea49632ad330ff9444059a66b1587"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.09793",
    "kind": "arxiv",
    "version": 1
  }
}