Pith Number

pith:EXFGSMUW

pith:2019:EXFGSMUW5PQBES2JDJ2YLHZDSN

not attested not anchored not stored refs pending

Hidden variable recurrent fractal interpolation function with four function contractivity factors

Chol-Hui Yun

arxiv:1904.09110 v1 · 2019-04-19 · math.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{EXFGSMUW5PQBES2JDJ2YLHZDSN}

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	2026-05-17T23:42:19.714482Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25ca693296ebe0124b491a75859f23935c26c75fc7c65cd3a27c9e7db63abad0

Aliases

arxiv: 1904.09110 · arxiv_version: 1904.09110v1 · doi: 10.48550/arxiv.1904.09110 · pith_short_12: EXFGSMUW5PQB · pith_short_16: EXFGSMUW5PQBES2J · pith_short_8: EXFGSMUW

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/EXFGSMUW5PQBES2JDJ2YLHZDSN \
  | 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: 25ca693296ebe0124b491a75859f23935c26c75fc7c65cd3a27c9e7db63abad0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e875bc77f125de615c61ae93a7dc9d7b66e02b7098091e5c7a34acd1d5866f6d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2019-04-19T08:00:32Z",
    "title_canon_sha256": "0fea2ab1140cbff8caaffb16a6b99589b9d8e6eb8a610d4bb6357a5252174107"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09110",
    "kind": "arxiv",
    "version": 1
  }
}