Pith Number

pith:DOFE23HY

pith:2009:DOFE23HYOWTZTL6MJDKOL5YHEB

not attested not anchored not stored refs pending

Solving MAX-r-SAT Above a Tight Lower Bound

Anders Yeo, Eun Jung Kim, Gregory Gutin, Noga Alon, Stefan Szeider

arxiv:0907.4573 v4 · 2009-07-27 · cs.DS · 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{DOFE23HYOWTZTL6MJDKOL5YHEB}

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	2026-05-18T04:15:04.816517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b8a4d6cf875a799afcc48d4e5f70720798a7168c29d41a84974203e26a2b352

Aliases

arxiv: 0907.4573 · arxiv_version: 0907.4573v4 · doi: 10.48550/arxiv.0907.4573 · pith_short_12: DOFE23HYOWTZ · pith_short_16: DOFE23HYOWTZTL6M · pith_short_8: DOFE23HY

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/DOFE23HYOWTZTL6MJDKOL5YHEB \
  | 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: 1b8a4d6cf875a799afcc48d4e5f70720798a7168c29d41a84974203e26a2b352

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2a3278bea6cee595cbafb7aba329b0b2b92fcae5c36d213c5fc068ed7324010",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2009-07-27T09:10:25Z",
    "title_canon_sha256": "887f364a97683af4d1fba12de9bff751fbb70b8b950f2d1414d5f31ed61dfc56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4573",
    "kind": "arxiv",
    "version": 4
  }
}