Pith Number

pith:3C7URLQP

pith:2020:3C7URLQPAZ6OTF4K267E2EMLKW

not attested not anchored not stored refs pending

Concurrent Kleene Algebra with Observations: from Hypotheses to Completeness

Alexandra Silva, Fabio Zanasi, Jana Wagemaker, Paul Brunet, Tobias Kapp\'e

arxiv:2002.09682 v1 · 2020-02-22 · cs.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3C7URLQPAZ6OTF4K267E2EMLKW}

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	2026-07-05T05:38:06.576481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8bf48ae0f067ce9978ad7be4d118b558b4652302cb87a439cf824638f2866f1

Aliases

arxiv: 2002.09682 · arxiv_version: 2002.09682v1 · doi: 10.48550/arxiv.2002.09682 · pith_short_12: 3C7URLQPAZ6O · pith_short_16: 3C7URLQPAZ6OTF4K · pith_short_8: 3C7URLQP

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/3C7URLQPAZ6OTF4K267E2EMLKW \
  | 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: d8bf48ae0f067ce9978ad7be4d118b558b4652302cb87a439cf824638f2866f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19c49b73eaae4cad2234aa9ab6d9496d9ad9de811c94c5ceefd22bfe9c9b0acb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2020-02-22T10:51:24Z",
    "title_canon_sha256": "4137e7d855ef056d08c26c7fd0ab4e3cdfc60baeed7d21bab8fde113b4a53888"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.09682",
    "kind": "arxiv",
    "version": 1
  }
}