Pith Number

pith:DFFTI7FT

pith:2018:DFFTI7FTIA7HLAIWH3UEXJFEKD

not attested not anchored not stored refs pending

Octonion-valued forms and the canonical 8-form on Riemannian manifolds with a $Spin(9)$-structure

Jan Kotrbat\'y

arxiv:1808.02452 v2 · 2018-08-07 · math.RT · 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{DFFTI7FTIA7HLAIWH3UEXJFEKD}

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	2026-05-17T23:43:43.148871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

194b347cb3403e7581163ee84ba4a450e936c72612ef4261bbcf21ba741759fa

Aliases

arxiv: 1808.02452 · arxiv_version: 1808.02452v2 · doi: 10.48550/arxiv.1808.02452 · pith_short_12: DFFTI7FTIA7H · pith_short_16: DFFTI7FTIA7HLAIW · pith_short_8: DFFTI7FT

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/DFFTI7FTIA7HLAIWH3UEXJFEKD \
  | 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: 194b347cb3403e7581163ee84ba4a450e936c72612ef4261bbcf21ba741759fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab5cf3394d963c8d30307e600444b0e94d9ebf810322097ae8f5ecc212068dc9",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RT",
    "submitted_at": "2018-08-07T16:40:34Z",
    "title_canon_sha256": "4ee6f78b958d9939832b4bcf73b61e99172fc018b426fc6a4b967ee94f4ab125"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02452",
    "kind": "arxiv",
    "version": 2
  }
}