Pith Number

pith:I3KBBR5S

pith:2013:I3KBBR5SDN2IVGMCB6J2NEG62V

not attested not anchored not stored refs pending

Natural Factors of the Medvedev Lattice Capturing IPC

Rutger Kuyper

arxiv:1311.2010 v2 · 2013-11-08 · 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{I3KBBR5SDN2IVGMCB6J2NEG62V}

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	2026-05-18T01:37:02.557905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46d410c7b21b748a99820f93a690ded561d55f887458fabe7965d7a93ac5afcb

Aliases

arxiv: 1311.2010 · arxiv_version: 1311.2010v2 · doi: 10.48550/arxiv.1311.2010 · pith_short_12: I3KBBR5SDN2I · pith_short_16: I3KBBR5SDN2IVGMC · pith_short_8: I3KBBR5S

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/I3KBBR5SDN2IVGMCB6J2NEG62V \
  | 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: 46d410c7b21b748a99820f93a690ded561d55f887458fabe7965d7a93ac5afcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "074ba7304d3fbe04897933d6931fb8c86e927abccc45e4b07f84d7bd6e480e3f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2013-11-08T16:11:07Z",
    "title_canon_sha256": "93ad2d864586fbae003053764e65ed076a7662dd05fb61eee27e1a2459e64ca3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2010",
    "kind": "arxiv",
    "version": 2
  }
}