Pith Number

pith:S6T3GQZD

pith:2021:S6T3GQZDCEOZGKUM4UIXYN25NC

not attested not anchored not stored refs pending

Guarded Kleene Algebra with Tests: Coequations, Coinduction, and Completeness

Alexandra Silva, Dexter Kozen, Tobias Kapp\'e, Todd Schmid

arxiv:2102.08286 v2 · 2021-02-16 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S6T3GQZDCEOZGKUM4UIXYN25NC}

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	2026-07-05T05:38:06.941567Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97a7b34323111d932a8ce5117c375d68bde180c1383109bd8f485f3c51704aa7

Aliases

arxiv: 2102.08286 · arxiv_version: 2102.08286v2 · doi: 10.48550/arxiv.2102.08286 · pith_short_12: S6T3GQZDCEOZ · pith_short_16: S6T3GQZDCEOZGKUM · pith_short_8: S6T3GQZD

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/S6T3GQZDCEOZGKUM4UIXYN25NC \
  | 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: 97a7b34323111d932a8ce5117c375d68bde180c1383109bd8f485f3c51704aa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69e594ffc264b0bc6275660f6b58249d660ffe02fc42db8d60692cc06d6907a1",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2021-02-16T17:16:23Z",
    "title_canon_sha256": "995febe58bca3aff6f6a164754d18c20e5f72af27ee7e54b702da6dcc364e809"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.08286",
    "kind": "arxiv",
    "version": 2
  }
}