Pith Number

pith:F7POWREQ

pith:2014:F7POWREQL6RW2CIDTCEELCNRRH

not attested not anchored not stored refs pending

Enforcing Operational Properties including Blockfreeness for Deterministic Pushdown Automata

Sven Schneider, Uwe Nestmann

arxiv:1403.5081 v2 · 2014-03-20 · 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{F7POWREQL6RW2CIDTCEELCNRRH}

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	2026-05-18T02:55:56.826289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fdeeb44905fa36d090398884589b189ebeaf9410a563e7ac3d632a140a2468b

Aliases

arxiv: 1403.5081 · arxiv_version: 1403.5081v2 · doi: 10.48550/arxiv.1403.5081 · pith_short_12: F7POWREQL6RW · pith_short_16: F7POWREQL6RW2CID · pith_short_8: F7POWREQ

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/F7POWREQL6RW2CIDTCEELCNRRH \
  | 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: 2fdeeb44905fa36d090398884589b189ebeaf9410a563e7ac3d632a140a2468b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17b896db7a5f2c5e5c2fa4d77e2d76726f0a0f37eab5f8734a5f788eed981a99",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-03-20T09:41:33Z",
    "title_canon_sha256": "8f8d82fb8b9823b1438c35588030e5e15a29104fe060fc8b577545bbf758476c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5081",
    "kind": "arxiv",
    "version": 2
  }
}