Pith Number

pith:I7BUA67V

pith:2013:I7BUA67VLF3CAQ2T3OFOMWRANR

not attested not anchored not stored refs pending

On some Siegel threefold related to the tangent cone of the Fermat quartic surface

Takeo Okazaki, Takuya Yamauchi

arxiv:1310.1662 v3 · 2013-10-07 · math.NT · 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{I7BUA67VLF3CAQ2T3OFOMWRANR}

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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	2026-05-18T02:47:40.963887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47c3407bf55976204353db8ae65a206c66ac73a8d61cde435838aa7596c39526

Aliases

arxiv: 1310.1662 · arxiv_version: 1310.1662v3 · doi: 10.48550/arxiv.1310.1662 · pith_short_12: I7BUA67VLF3C · pith_short_16: I7BUA67VLF3CAQ2T · pith_short_8: I7BUA67V

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/I7BUA67VLF3CAQ2T3OFOMWRANR \
  | 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: 47c3407bf55976204353db8ae65a206c66ac73a8d61cde435838aa7596c39526

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fa629c9ce16dac100bf521daf8ff7a37b186a3af5ea4310366e7b09cf034636",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-10-07T02:50:00Z",
    "title_canon_sha256": "7c0426f13eca29eb6f5dd33d6f1734a46a310987618e235e17f6f26cae1c14b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1662",
    "kind": "arxiv",
    "version": 3
  }
}