Pith Number

pith:F2QN45SZ

pith:2015:F2QN45SZFL3O2U6HWHD7Q73DLN

not attested not anchored not stored refs pending

Dealing With 4-Variables by Resolution: An Improved MaxSAT Algorithm

Chao Xu, Jianer Chen

arxiv:1503.02920 v1 · 2015-03-10 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F2QN45SZFL3O2U6HWHD7Q73DLN}

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	2026-05-18T02:25:12.751966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ea0de76592af6ed53c7b1c7f87f635b6ce16e70ca2344ebff947947cc06af4b

Aliases

arxiv: 1503.02920 · arxiv_version: 1503.02920v1 · doi: 10.48550/arxiv.1503.02920 · pith_short_12: F2QN45SZFL3O · pith_short_16: F2QN45SZFL3O2U6H · pith_short_8: F2QN45SZ

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/F2QN45SZFL3O2U6HWHD7Q73DLN \
  | 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: 2ea0de76592af6ed53c7b1c7f87f635b6ce16e70ca2344ebff947947cc06af4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85a1bbdc20174ad9784193b6dec3daa52bb7352c10b57d29b873a4339866df41",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-03-10T14:21:23Z",
    "title_canon_sha256": "79db0ca0bfdfc7fb826238676a1eb588c466d2652d8437550b1a1903751ba6b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02920",
    "kind": "arxiv",
    "version": 1
  }
}