Pith Number

pith:H4FKIO3A

pith:2011:H4FKIO3AMT6PA5JSSE5QFCJ42D

not attested not anchored not stored refs pending

Quartet fixed point for nonlinear contraction

Erdal Karapinar

arxiv:1106.5472 v1 · 2011-06-27 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4FKIO3AMT6PA5JSSE5QFCJ42D}

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	2026-05-18T04:19:13.549877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f0aa43b6064fcf07532913b02893cd0cde95855629376fe05ef9ebbf33d96ba

Aliases

arxiv: 1106.5472 · arxiv_version: 1106.5472v1 · doi: 10.48550/arxiv.1106.5472 · pith_short_12: H4FKIO3AMT6P · pith_short_16: H4FKIO3AMT6PA5JS · pith_short_8: H4FKIO3A

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/H4FKIO3AMT6PA5JSSE5QFCJ42D \
  | 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: 3f0aa43b6064fcf07532913b02893cd0cde95855629376fe05ef9ebbf33d96ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06c0ef6b9435caf7743c1e4ef8a79b7414b4fba744aea63c7d08c20ea6bf02a4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2011-06-27T18:38:24Z",
    "title_canon_sha256": "dbeb432399540ff17de14fcd7e830539457b193abc1c1c5729d06290e7f04910"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.5472",
    "kind": "arxiv",
    "version": 1
  }
}