Pith Number

pith:W4PRS5W4

pith:2014:W4PRS5W4HV2SSOTWU7DWCBU3PH

not attested not anchored not stored refs pending

Strong inapproximability of the shortest reset word

Damian Straszak, Pawel Gawrychowski

arxiv:1408.5248 v2 · 2014-08-22 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W4PRS5W4HV2SSOTWU7DWCBU3PH}

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	2026-05-18T01:55:42.893618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b71f1976dc3d75293a76a7c761069b79ddb14f0eaee37cbdb9fe6a513c95d7c8

Aliases

arxiv: 1408.5248 · arxiv_version: 1408.5248v2 · doi: 10.48550/arxiv.1408.5248 · pith_short_12: W4PRS5W4HV2S · pith_short_16: W4PRS5W4HV2SSOTW · pith_short_8: W4PRS5W4

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/W4PRS5W4HV2SSOTWU7DWCBU3PH \
  | 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: b71f1976dc3d75293a76a7c761069b79ddb14f0eaee37cbdb9fe6a513c95d7c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdfcee900a87408318328502877ec4036fdcb9016ed33db6384e6a4e6107c7eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-08-22T10:06:08Z",
    "title_canon_sha256": "4956fa7b35ff1d4af2d1d3fd6989ba8db5a34d1454d08d98d76612c319d6021a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5248",
    "kind": "arxiv",
    "version": 2
  }
}