Pith Number

pith:M2K4SI7I

pith:2015:M2K4SI7IESC3ECULQGR5HZW3RZ

not attested not anchored not stored refs pending

Reduction of Nondeterministic Tree Automata

Luk\'a\v{s} Hol\'ik, Ricardo Almeida, Richard Mayr

arxiv:1512.08823 v2 · 2015-12-30 · 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{M2K4SI7IESC3ECULQGR5HZW3RZ}

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	2026-05-18T01:23:18.367005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6695c923e82485b20a8b81a3d3e6db8e6feaf5ab7565f31087eef9ae3bc99fe4

Aliases

arxiv: 1512.08823 · arxiv_version: 1512.08823v2 · doi: 10.48550/arxiv.1512.08823 · pith_short_12: M2K4SI7IESC3 · pith_short_16: M2K4SI7IESC3ECUL · pith_short_8: M2K4SI7I

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/M2K4SI7IESC3ECULQGR5HZW3RZ \
  | 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: 6695c923e82485b20a8b81a3d3e6db8e6feaf5ab7565f31087eef9ae3bc99fe4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc2a2b00cef205e01eda50aebe6ffdb0d8c3bb86cee7380eb79d5efd57a38c65",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2015-12-30T01:16:49Z",
    "title_canon_sha256": "e9a4146b6b96557edc6c5532a387da560ee6f8b69ced692246e41741c89f386a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08823",
    "kind": "arxiv",
    "version": 2
  }
}