Pith Number

pith:FFDZS7YC

pith:1996:FFDZS7YC3DHKLEAHQKILCI5LLJ

not attested not anchored not stored refs pending

Piecewise smooth one dimensional maps with nowhere vanishing derivative

Ale Jan Homburg

arxiv:math/9605229 v1 · 1996-05-15 · 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{FFDZS7YC3DHKLEAHQKILCI5LLJ}

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	2026-05-18T01:05:47.382382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2947997f02d8cea590078290b123ab5a5927e1aaf6d08908be057abafaba4820

Aliases

arxiv: math/9605229 · arxiv_version: math/9605229v1 · doi: 10.48550/arxiv.math/9605229 · pith_short_12: FFDZS7YC3DHK · pith_short_16: FFDZS7YC3DHKLEAH · pith_short_8: FFDZS7YC

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/FFDZS7YC3DHKLEAHQKILCI5LLJ \
  | 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: 2947997f02d8cea590078290b123ab5a5927e1aaf6d08908be057abafaba4820

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba4505d6c2ff390d0cc8a7a6a83381beff86bee0758844bee4763612bdcfb9b1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.DS",
    "submitted_at": "1996-05-15T00:00:00Z",
    "title_canon_sha256": "567646396acb695754f1e7d4535254476cf8d6ca9313b8385a262e5d903274f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9605229",
    "kind": "arxiv",
    "version": 1
  }
}