Pith Number

pith:AWQ5EUZC

pith:2011:AWQ5EUZCC5RWGIKWXGN2ZB6F6N

not attested not anchored not stored refs pending

Backdoors to Acyclic SAT

Serge Gaspers, Stefan Szeider

arxiv:1110.6384 v3 · 2011-10-28 · cs.DS · cs.AI · cs.CC · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AWQ5EUZCC5RWGIKWXGN2ZB6F6N}

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	2026-05-18T04:01:50.809444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05a1d253221763632156b99bac87c5f36c9b92ca8c6dee297bccad59ef3dc1de

Aliases

arxiv: 1110.6384 · arxiv_version: 1110.6384v3 · doi: 10.48550/arxiv.1110.6384 · pith_short_12: AWQ5EUZCC5RW · pith_short_16: AWQ5EUZCC5RWGIKW · pith_short_8: AWQ5EUZC

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/AWQ5EUZCC5RWGIKWXGN2ZB6F6N \
  | 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: 05a1d253221763632156b99bac87c5f36c9b92ca8c6dee297bccad59ef3dc1de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cf36ffb46b467c3577f7228ca013db30939f5970cc291f08e544f6e6b435a6c",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CC",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-10-28T16:10:32Z",
    "title_canon_sha256": "fa0879dd0e0b6c88b3beaca0c133ba003a0562feb7167044148d01d3f5bf9ce9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.6384",
    "kind": "arxiv",
    "version": 3
  }
}