Pith Number

pith:B5TXINOS

pith:2014:B5TXINOS5Y4IG5JTCQVL4CEC3K

not attested not anchored not stored refs pending

A strong law of computationally weak subsets

Bj{\o}rn Kjos-Hanssen

arxiv:1408.1967 v1 · 2014-08-08 · math.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{B5TXINOS5Y4IG5JTCQVL4CEC3K}

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	2026-05-18T02:45:30.907018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f677435d2ee38837533142abe0882daaac0cac5b1fba61670e9c8fc9b74dba0

Aliases

arxiv: 1408.1967 · arxiv_version: 1408.1967v1 · doi: 10.48550/arxiv.1408.1967 · pith_short_12: B5TXINOS5Y4I · pith_short_16: B5TXINOS5Y4IG5JT · pith_short_8: B5TXINOS

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/B5TXINOS5Y4IG5JTCQVL4CEC3K \
  | 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: 0f677435d2ee38837533142abe0882daaac0cac5b1fba61670e9c8fc9b74dba0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d247175473a46cdd059d59b641b8941d509fe78cca81a4204b487a3552196496",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-08-08T20:13:10Z",
    "title_canon_sha256": "2426aeb2b16cc2f208e19f406f0c40474a55249ed10b38cc1df10ec089502f69"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1967",
    "kind": "arxiv",
    "version": 1
  }
}