Pith Number

pith:XUO5GMBX

pith:2010:XUO5GMBXSSLRKBVNSMDJWFRBDO

not attested not anchored not stored refs pending

Hybrid tractability of soft constraint problems

Martin C. Cooper, Stanislav Zivny

arxiv:1008.4071 v1 · 2010-08-24 · cs.AI · 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{XUO5GMBXSSLRKBVNSMDJWFRBDO}

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	2026-05-18T04:23:35.113925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd1dd3303794971506ad93069b16211b955883cf7fb9000c9fc0eb68567273a2

Aliases

arxiv: 1008.4071 · arxiv_version: 1008.4071v1 · doi: 10.48550/arxiv.1008.4071 · pith_short_12: XUO5GMBXSSLR · pith_short_16: XUO5GMBXSSLRKBVN · pith_short_8: XUO5GMBX

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/XUO5GMBXSSLRKBVNSMDJWFRBDO \
  | 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: bd1dd3303794971506ad93069b16211b955883cf7fb9000c9fc0eb68567273a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71d97c30e45a4c7ffbb7defcc88ac5b3f7737892411eeec5f3e9eafd4ca05c66",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2010-08-24T15:42:21Z",
    "title_canon_sha256": "c6a99af37687d8f49613b9e37598252e00bf1e41ca3ca91f590208f1ca743a36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4071",
    "kind": "arxiv",
    "version": 1
  }
}