Pith Number

pith:7N2T5EIW

pith:2017:7N2T5EIWMINGPMAMXSG73JSHPP

not attested not anchored not stored refs pending

An invariant for embedded Fano manifolds covered by linear spaces

Taku Suzuki

arxiv:1705.03813 v2 · 2017-05-10 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7N2T5EIWMINGPMAMXSG73JSHPP}

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	2026-05-18T00:42:12.025727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb753e9116621a67b00cbc8dfda6477bfd0ae68ea3e22ba384005d1af0ad18c6

Aliases

arxiv: 1705.03813 · arxiv_version: 1705.03813v2 · doi: 10.48550/arxiv.1705.03813 · pith_short_12: 7N2T5EIWMING · pith_short_16: 7N2T5EIWMINGPMAM · pith_short_8: 7N2T5EIW

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/7N2T5EIWMINGPMAMXSG73JSHPP \
  | 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: fb753e9116621a67b00cbc8dfda6477bfd0ae68ea3e22ba384005d1af0ad18c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d814bee6fd0283af6035b5bd39cdc11893bd4040921f450f866747e45e21498a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-05-10T15:16:57Z",
    "title_canon_sha256": "ab12ac6bcb6423be09f6c2e1d5ebee7db5b6a0598bf0c40adc69a7678f57089a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.03813",
    "kind": "arxiv",
    "version": 2
  }
}