Pith Number

pith:OMHU4OIL

pith:2012:OMHU4OILIIBL7K7NIUPVHXY5YT

not attested not anchored not stored refs pending

Degree two approximate Boolean #CSPs with variable weights

Colin McQuillan

arxiv:1204.5714 v1 · 2012-04-25 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OMHU4OILIIBL7K7NIUPVHXY5YT}

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	2026-05-18T03:57:01.549252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

730f4e390b4202bfabed451f53df1dc4c0734c12c2abd091d192f7d459917488

Aliases

arxiv: 1204.5714 · arxiv_version: 1204.5714v1 · doi: 10.48550/arxiv.1204.5714 · pith_short_12: OMHU4OILIIBL · pith_short_16: OMHU4OILIIBL7K7N · pith_short_8: OMHU4OIL

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/OMHU4OILIIBL7K7NIUPVHXY5YT \
  | 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: 730f4e390b4202bfabed451f53df1dc4c0734c12c2abd091d192f7d459917488

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ced5bc872d37dfa032ec011d8011f1766de5aae7fe07fd29dda693370632fb6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2012-04-25T17:40:10Z",
    "title_canon_sha256": "e1e98cc25f679fb153968f6e24e3780c64c3f1609ffea49931cdf8aae0bec6ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5714",
    "kind": "arxiv",
    "version": 1
  }
}