Pith Number

pith:QHQC64IA

pith:2012:QHQC64IA3GW5AQ5FZO3E6WEXGA

not attested not anchored not stored refs pending

Rigorous Enclosures of a Slow Manifold

John Guckenheimer, Philipp Meerkamp, Tomas Johnson

arxiv:1201.1948 v5 · 2012-01-10 · 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{QHQC64IA3GW5AQ5FZO3E6WEXGA}

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	2026-05-18T03:45:21.111557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81e02f7100d9add043a5cbb64f58973037f649d6daa3d222ed40bfbe9ea16abc

Aliases

arxiv: 1201.1948 · arxiv_version: 1201.1948v5 · doi: 10.48550/arxiv.1201.1948 · pith_short_12: QHQC64IA3GW5 · pith_short_16: QHQC64IA3GW5AQ5F · pith_short_8: QHQC64IA

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/QHQC64IA3GW5AQ5FZO3E6WEXGA \
  | 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: 81e02f7100d9add043a5cbb64f58973037f649d6daa3d222ed40bfbe9ea16abc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04df35f9797260c39230fb7ba328e825e29950cb80b36981ea2f04c54dfff28a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-01-10T01:19:29Z",
    "title_canon_sha256": "341d7a648dd765d1995a80184adb2294295eac9db4a9959b6fd8d45e7a8799fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1948",
    "kind": "arxiv",
    "version": 5
  }
}