Pith Number

pith:PQ323JBU

pith:2017:PQ323JBUDA2E4HRVCLT4OVZCXZ

not attested not anchored not stored refs pending

Ren{\'e} Thom and an anticipated h-principle

Francois Laudenbach (LMJL)

arxiv:1703.08108 v2 · 2017-03-23 · math.HO · math.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQ323JBUDA2E4HRVCLT4OVZCXZ}

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	2026-05-18T00:46:46.151810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c37ada43418344e1e3512e7c75722be742d4ed9c93534851d99b5bc79f96a87

Aliases

arxiv: 1703.08108 · arxiv_version: 1703.08108v2 · doi: 10.48550/arxiv.1703.08108 · pith_short_12: PQ323JBUDA2E · pith_short_16: PQ323JBUDA2E4HRV · pith_short_8: PQ323JBU

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/PQ323JBUDA2E4HRVCLT4OVZCXZ \
  | 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: 7c37ada43418344e1e3512e7c75722be742d4ed9c93534851d99b5bc79f96a87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4e66bf946b3c228a66a55204d58b15242049a8b5f952e7c3d77125bbc5537ee",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2017-03-23T15:33:11Z",
    "title_canon_sha256": "0f10ca90178ff40f44a4576a6e5099ec2e301ecd669f2ba4b0ac60e2b8c0f6ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.08108",
    "kind": "arxiv",
    "version": 2
  }
}