Pith Number

pith:WLQC6ICM

pith:2025:WLQC6ICM5HIN5VDS26NDPZ7NJ5

not attested not anchored not stored refs pending

The 2-Token Theorem: Recognising History-Deterministic Parity Automata Efficiently

Karoliina Lehtinen, Keya Prakash

arxiv:2503.24244 v1 · 2025-03-31 · 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{WLQC6ICM5HIN5VDS26NDPZ7NJ5}

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	2026-05-28T21:06:53.514012Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2e02f204ce9d0ded472d79a37e7ed4f61a1c9a6bfd3fb0687134ee161687c33

Aliases

arxiv: 2503.24244 · arxiv_version: 2503.24244v1 · doi: 10.48550/arxiv.2503.24244 · pith_short_12: WLQC6ICM5HIN · pith_short_16: WLQC6ICM5HIN5VDS · pith_short_8: WLQC6ICM

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/WLQC6ICM5HIN5VDS26NDPZ7NJ5 \
  | 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: b2e02f204ce9d0ded472d79a37e7ed4f61a1c9a6bfd3fb0687134ee161687c33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddc5ef10651f8a364a9f339848c072f90c1c0d611c603aede1dc72193ddb5790",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2025-03-31T15:57:44Z",
    "title_canon_sha256": "d8e2021e9df03a63f98cf75a0befa0a2df1ddb1fd453526edb8b57fd982bc7fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.24244",
    "kind": "arxiv",
    "version": 1
  }
}