Pith Number

pith:SXJ27PIP

pith:2014:SXJ27PIPARAPTOCRMIBA4RECTK

not attested not anchored not stored refs pending

AND-compression of NP-complete problems: Streamlined proof and minor observations

Holger Dell

arxiv:1405.4472 v2 · 2014-05-18 · cs.CC · 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{SXJ27PIPARAPTOCRMIBA4RECTK}

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	2026-05-18T00:17:55.606632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95d3afbd0f0440f9b85162020e44829a86adc256fc281db4f533ace5dc10b140

Aliases

arxiv: 1405.4472 · arxiv_version: 1405.4472v2 · doi: 10.48550/arxiv.1405.4472 · pith_short_12: SXJ27PIPARAP · pith_short_16: SXJ27PIPARAPTOCR · pith_short_8: SXJ27PIP

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/SXJ27PIPARAPTOCRMIBA4RECTK \
  | 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: 95d3afbd0f0440f9b85162020e44829a86adc256fc281db4f533ace5dc10b140

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "956b48a6cd273fa1081b2df4dc871782e10f03ff1afc85ad7447faebaebfe09c",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2014-05-18T08:48:39Z",
    "title_canon_sha256": "c13b34aab18199c419299686d567583405b4af711e0621b8c90e793f2679b29a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4472",
    "kind": "arxiv",
    "version": 2
  }
}