Pith Number

pith:4SZ3KZSR

pith:2016:4SZ3KZSRVSXGGS2ZX2A656BI2H

not attested not anchored not stored refs pending

Complexity of Universality and Related Problems for Partially Ordered NFAs

Markus Kr\"otzsch, Micha\"el Thomazo, Tom\'a\v{s} Masopust

arxiv:1609.03460 v2 · 2016-09-12 · 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{4SZ3KZSRVSXGGS2ZX2A656BI2H}

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	2026-05-18T00:30:48.816885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4b3b56651acae634b59be81eef828d1fb70c698f41d03ab49a9ffb9aa4ee561

Aliases

arxiv: 1609.03460 · arxiv_version: 1609.03460v2 · doi: 10.48550/arxiv.1609.03460 · pith_short_12: 4SZ3KZSRVSXG · pith_short_16: 4SZ3KZSRVSXGGS2Z · pith_short_8: 4SZ3KZSR

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/4SZ3KZSRVSXGGS2ZX2A656BI2H \
  | 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: e4b3b56651acae634b59be81eef828d1fb70c698f41d03ab49a9ffb9aa4ee561

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be87b1d821cde6466f45e75aaf5fa61104375dd3cd1e01c09ad78b4b52eed8d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2016-09-12T16:10:28Z",
    "title_canon_sha256": "10399fd81b2e5b2f518ba176eb5642fbce13f97f4101bc81de22e766d1884a69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.03460",
    "kind": "arxiv",
    "version": 2
  }
}