Pith Number

pith:BWJAPDNK

pith:2012:BWJAPDNKGDTBICHXCXYZ5H4C4G

not attested not anchored not stored refs pending

Canards and curvature: nonsmooth approximation by pinching

Mathieu Desroches, Mike R. Jeffrey

arxiv:1204.4036 v2 · 2012-04-18 · 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{BWJAPDNKGDTBICHXCXYZ5H4C4G}

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	2026-05-18T01:57:41.141813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d92078daa30e61408f715f19e9f82e19fd9cff3670463a4811cbb6c6e8896c7

Aliases

arxiv: 1204.4036 · arxiv_version: 1204.4036v2 · doi: 10.48550/arxiv.1204.4036 · pith_short_12: BWJAPDNKGDTB · pith_short_16: BWJAPDNKGDTBICHX · pith_short_8: BWJAPDNK

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/BWJAPDNKGDTBICHXCXYZ5H4C4G \
  | 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: 0d92078daa30e61408f715f19e9f82e19fd9cff3670463a4811cbb6c6e8896c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31ea378691cc41543750b21958451d67abe4d74ebb34c7344cdc377bd8563f03",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-04-18T10:18:24Z",
    "title_canon_sha256": "6975bbf711ac84904d428c24a07444608a1d0e1d017b7636cff2dc4dc0767036"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4036",
    "kind": "arxiv",
    "version": 2
  }
}