Pith Number

pith:KFGKWTWR

pith:2012:KFGKWTWRLMBYICKG4IIRWMNZ4J

not attested not anchored not stored refs pending

On a functional contraction method

Henning Sulzbach, Ralph Neininger

arxiv:1202.1370 v3 · 2012-02-07 · math.PR · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KFGKWTWRLMBYICKG4IIRWMNZ4J}

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	2026-05-18T01:33:34.222165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

514cab4ed15b03840946e2111b31b9e254ca31726063633b4de6c15625d328f2

Aliases

arxiv: 1202.1370 · arxiv_version: 1202.1370v3 · doi: 10.48550/arxiv.1202.1370 · pith_short_12: KFGKWTWRLMBY · pith_short_16: KFGKWTWRLMBYICKG · pith_short_8: KFGKWTWR

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/KFGKWTWRLMBYICKG4IIRWMNZ4J \
  | 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: 514cab4ed15b03840946e2111b31b9e254ca31726063633b4de6c15625d328f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e9e4a52e15d784979bfe10baf7388c6867cc2b763503851db0b9e137a64705e",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.PR",
    "submitted_at": "2012-02-07T08:41:19Z",
    "title_canon_sha256": "495f8de1158ca5b6463706c2cd7215c41e75a48947d716bd66060f8307168b0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1370",
    "kind": "arxiv",
    "version": 3
  }
}