Pith Number

pith:HF2KGE57

pith:1992:HF2KGE57ZBEH5WN5PVJQEOLOTB

not attested not anchored not stored refs pending

The Fr\"olicher-Nijenhuis bracket in non-commutative differential geometry

Andreas Cap, Andreas Kriegl, Ji\v{r}i Van\v{z}ura, Peter W. Michor

arxiv:math/9207209 v1 · 1992-07-01 · math.QA · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HF2KGE57ZBEH5WN5PVJQEOLOTB}

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	2026-05-18T01:05:52.723773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3974a313bfc8487ed9bd7d5302396e9863992741af80ddf7c99b1f7c7e566a20

Aliases

arxiv: math/9207209 · arxiv_version: math/9207209v1 · doi: 10.48550/arxiv.math/9207209 · pith_short_12: HF2KGE57ZBEH · pith_short_16: HF2KGE57ZBEH5WN5 · pith_short_8: HF2KGE57

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/HF2KGE57ZBEH5WN5PVJQEOLOTB \
  | 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: 3974a313bfc8487ed9bd7d5302396e9863992741af80ddf7c99b1f7c7e566a20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce66aaddb6f9e8b185360d645a37d1bc8f0df2ea447a02275104a5998846f9b0",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "",
    "primary_cat": "math.QA",
    "submitted_at": "1992-07-01T00:00:00Z",
    "title_canon_sha256": "e05c4d8d764b3937c6f7bfc44f04826b56c910dba3c324cbebe5a57a3055e86a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9207209",
    "kind": "arxiv",
    "version": 1
  }
}