Pith Number

pith:37NOCE5R

pith:2016:37NOCE5ROG3JAUFJMUNSTDGI6S

not attested not anchored not stored refs pending

On the tangent groupoid of a filtered manifold

Erik van Erp, Robert Yuncken

arxiv:1611.01081 v2 · 2016-11-03 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{37NOCE5ROG3JAUFJMUNSTDGI6S}

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	2026-05-18T00:32:44.229998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfdae113b171b69050a9651b298cc8f4a55856bdc2a2f32b1795576d5703b84d

Aliases

arxiv: 1611.01081 · arxiv_version: 1611.01081v2 · doi: 10.48550/arxiv.1611.01081 · pith_short_12: 37NOCE5ROG3J · pith_short_16: 37NOCE5ROG3JAUFJ · pith_short_8: 37NOCE5R

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/37NOCE5ROG3JAUFJMUNSTDGI6S \
  | 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: dfdae113b171b69050a9651b298cc8f4a55856bdc2a2f32b1795576d5703b84d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58cfe9bbdebd09e9bc61e5b4abb604839d47909efd6c17c9e24572ebf3ce3e63",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2016-11-03T16:34:13Z",
    "title_canon_sha256": "0aff4eae8db9ec9427c1eef7f9389edf16678c77d2d795427fc0556296d55a65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.01081",
    "kind": "arxiv",
    "version": 2
  }
}