Pith Number

pith:AALWTNX3

pith:2011:AALWTNX3NZSVCYMCXR3HRE7M6W

not attested not anchored not stored refs pending

Construction of an NP Problem with an Exponential Lower Bound

Roman V. Yampolskiy

arxiv:1111.0305 v1 · 2011-10-28 · 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{AALWTNX3NZSVCYMCXR3HRE7M6W}

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	2026-05-18T04:09:45.315801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

001769b6fb6e65516182bc767893ecf58aec80c814d68263e5faaf667b765681

Aliases

arxiv: 1111.0305 · arxiv_version: 1111.0305v1 · doi: 10.48550/arxiv.1111.0305 · pith_short_12: AALWTNX3NZSV · pith_short_16: AALWTNX3NZSVCYMC · pith_short_8: AALWTNX3

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/AALWTNX3NZSVCYMCXR3HRE7M6W \
  | 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: 001769b6fb6e65516182bc767893ecf58aec80c814d68263e5faaf667b765681

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8c59ee1ecb953fc0c9d5e79695dab4e63908d8b394ab740427546b74f340619",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-10-28T21:25:12Z",
    "title_canon_sha256": "26bd04b17711c1e608df8e07401a81e659f304409670afdabbaedb4bdf62fa10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.0305",
    "kind": "arxiv",
    "version": 1
  }
}