Pith Number

pith:5SSFR6NA

pith:2004:5SSFR6NAL2GBQ4QDIBPCC46W5L

not attested not anchored not stored refs pending

On Modal Logics of Partial Recursive Functions

Pavel Naumov

arxiv:cs/0407031 v1 · 2004-07-12 · 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{5SSFR6NAL2GBQ4QDIBPCC46W5L}

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	2026-07-04T14:24:45.160396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eca458f9a05e8c187203405e2173d6eaf206faa791644a7b1240196ff2f58e8c

Aliases

arxiv: cs/0407031 · arxiv_version: cs/0407031v1 · doi: 10.48550/arxiv.cs/0407031 · pith_short_12: 5SSFR6NAL2GB · pith_short_16: 5SSFR6NAL2GBQ4QD · pith_short_8: 5SSFR6NA

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/5SSFR6NAL2GBQ4QDIBPCC46W5L \
  | 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: eca458f9a05e8c187203405e2173d6eaf206faa791644a7b1240196ff2f58e8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65da38ff4c2dd396dac85a364176e8a08a2362daa75ae660acf5de6d97cc8db1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.LO",
    "submitted_at": "2004-07-12T22:53:33Z",
    "title_canon_sha256": "deab14509faf088cfe26b8e20d80d7883dad922bbbbd76432dba373cc2ef22ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0407031",
    "kind": "arxiv",
    "version": 1
  }
}