Pith Number

pith:RFZGRY5L

pith:2003:RFZGRY5LAFSYOQS5LXRRUMMN5K

not attested not anchored not stored refs pending

On the hyperbolicity of the Feigenbaum fixed point

Daniel Smania

arxiv:math/0301118 v1 · 2003-01-11 · math.DS · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RFZGRY5LAFSYOQS5LXRRUMMN5K}

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	2026-05-18T00:26:40.723763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

897268e3ab016587425d5de31a318deab056d1582e3a51e60ff3fa945be7d90d

Aliases

arxiv: math/0301118 · arxiv_version: math/0301118v1 · doi: 10.48550/arxiv.math/0301118 · pith_short_12: RFZGRY5LAFSY · pith_short_16: RFZGRY5LAFSYOQS5 · pith_short_8: RFZGRY5L

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/RFZGRY5LAFSYOQS5LXRRUMMN5K \
  | 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: 897268e3ab016587425d5de31a318deab056d1582e3a51e60ff3fa945be7d90d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97da10e14c01dc3d5930731404a42662321731a90fe90cde1883b7db9a74cfab",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "",
    "primary_cat": "math.DS",
    "submitted_at": "2003-01-11T22:10:18Z",
    "title_canon_sha256": "7b3757993ab81ffc8a635b1a015a3e1ee81d9208a51a588e33076723987a4928"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0301118",
    "kind": "arxiv",
    "version": 1
  }
}