Pith Number

pith:HTJ7Z4M3

pith:2018:HTJ7Z4M3SJFXP5ERTUA6TNAYQQ

not attested not anchored not stored refs pending

Degeneration of quadratic polynomial endomorphisms to a H\'enon map

Fabrizio Bianchi, Y\^usuke Okuyama

arxiv:1803.10471 v1 · 2018-03-28 · 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{HTJ7Z4M3SJFXP5ERTUA6TNAYQQ}

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	2026-05-18T00:19:55.290647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cd3fcf19b924b77f4919d01e9b4188423ee445d2b9c466c75e987a6dd0afa15

Aliases

arxiv: 1803.10471 · arxiv_version: 1803.10471v1 · doi: 10.48550/arxiv.1803.10471 · pith_short_12: HTJ7Z4M3SJFX · pith_short_16: HTJ7Z4M3SJFXP5ER · pith_short_8: HTJ7Z4M3

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/HTJ7Z4M3SJFXP5ERTUA6TNAYQQ \
  | 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: 3cd3fcf19b924b77f4919d01e9b4188423ee445d2b9c466c75e987a6dd0afa15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f66c9f0fd8fdeaf66bc071dcb82a234b4e34bea8a60cb51eb34c549227c7cbb",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-03-28T09:04:50Z",
    "title_canon_sha256": "761004980587348b0e226b45143973f527066d0fcc08eae570d1f9d699e15c55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.10471",
    "kind": "arxiv",
    "version": 1
  }
}