Pith Number

pith:7ZKSYPFX

pith:2016:7ZKSYPFXLITZVXDN4Q2T3D5W7A

not attested not anchored not stored refs pending

Projective classification of jets of surfaces in $\mathbb{P}^4$

Jorge Luiz Deolindo Silva, Yutaro Kabata

arxiv:1601.06255 v1 · 2016-01-23 · math.DG · 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{7ZKSYPFXLITZVXDN4Q2T3D5W7A}

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	2026-05-18T01:22:04.943160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe552c3cb75a279adc6de4353d8fb6f82daf626ef50a9d2267bebf9491364346

Aliases

arxiv: 1601.06255 · arxiv_version: 1601.06255v1 · doi: 10.48550/arxiv.1601.06255 · pith_short_12: 7ZKSYPFXLITZ · pith_short_16: 7ZKSYPFXLITZVXDN · pith_short_8: 7ZKSYPFX

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/7ZKSYPFXLITZVXDN4Q2T3D5W7A \
  | 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: fe552c3cb75a279adc6de4353d8fb6f82daf626ef50a9d2267bebf9491364346

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b114113af6e14b62d4f1c3b12fa2d2e0201e770512817e4b28bb5a7d969bad6c",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2016-01-23T09:09:37Z",
    "title_canon_sha256": "f96af9c0157027fc8b2d0e512eb94c69efd75206e16d5291e753ffda863576a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.06255",
    "kind": "arxiv",
    "version": 1
  }
}