Pith Number

pith:BUTCSF5Y

pith:2018:BUTCSF5YUPAPN3OOFAV2SAITOP

not attested not anchored not stored refs pending

Note on the Lower Bounds of Bimachines

Stefan Gerdjikov

arxiv:1804.10146 v1 · 2018-04-14 · 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{BUTCSF5YUPAPN3OOFAV2SAITOP}

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	2026-05-18T00:17:25.036935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d262917b8a3c0f6edce282ba9011373f1e77cbf2c5e67c3846d1a134d8188a2

Aliases

arxiv: 1804.10146 · arxiv_version: 1804.10146v1 · doi: 10.48550/arxiv.1804.10146 · pith_short_12: BUTCSF5YUPAP · pith_short_16: BUTCSF5YUPAPN3OO · pith_short_8: BUTCSF5Y

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/BUTCSF5YUPAPN3OOFAV2SAITOP \
  | 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: 0d262917b8a3c0f6edce282ba9011373f1e77cbf2c5e67c3846d1a134d8188a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6172a09128f5c63f9f1e3b316872f357130800736015889194887f3be701d4b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-04-14T11:41:32Z",
    "title_canon_sha256": "21b8c512d580287cc673df8a30220da27153dddfbcaadc6df4022f6151060009"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.10146",
    "kind": "arxiv",
    "version": 1
  }
}