Pith Number

pith:FEDU2E64

pith:2016:FEDU2E64JLYFQULJCDRM4ZJUUY

not attested not anchored not stored refs pending

S5-invariant Nonsingular Quartic Surfaces

Giorgio Faina, Hitoshi Kaneta, Stefano Marcugini Fernanda Pambianco

arxiv:1605.08720 v2 · 2016-05-27 · 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{FEDU2E64JLYFQULJCDRM4ZJUUY}

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	2026-05-18T01:12:24.868815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29074d13dc4af058516910e2ce6534a62cd90800511a96a00f9f44e1ea6b8bcd

Aliases

arxiv: 1605.08720 · arxiv_version: 1605.08720v2 · doi: 10.48550/arxiv.1605.08720 · pith_short_12: FEDU2E64JLYF · pith_short_16: FEDU2E64JLYFQULJ · pith_short_8: FEDU2E64

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/FEDU2E64JLYFQULJCDRM4ZJUUY \
  | 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: 29074d13dc4af058516910e2ce6534a62cd90800511a96a00f9f44e1ea6b8bcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27b4ad9cacc435df23c172055090d336b5dbaf535969b1ab6c91343b435437a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-05-27T17:21:39Z",
    "title_canon_sha256": "d6ad8933b2faed6a528b250e3ce373e6615f40d79928069958dbbc6a030fe9b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.08720",
    "kind": "arxiv",
    "version": 2
  }
}