Pith Number

pith:2H7T7ET7

pith:2016:2H7T7ET7VTNHNEJEQNWUKDF7XE

not attested not anchored not stored refs pending

Period differential equations for the families of $K3$ surfaces with $2$ parameters derived from the reflexive polytopes

Atsuhira Nagano

arxiv:1603.09735 v2 · 2016-03-26 · 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{2H7T7ET7VTNHNEJEQNWUKDF7XE}

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	2026-05-18T00:48:09.891327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1ff3f927facda769124836d450cbfb934732fe4113a6126ffc291e71d3f3fe3

Aliases

arxiv: 1603.09735 · arxiv_version: 1603.09735v2 · doi: 10.48550/arxiv.1603.09735 · pith_short_12: 2H7T7ET7VTNH · pith_short_16: 2H7T7ET7VTNHNEJE · pith_short_8: 2H7T7ET7

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/2H7T7ET7VTNHNEJEQNWUKDF7XE \
  | 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: d1ff3f927facda769124836d450cbfb934732fe4113a6126ffc291e71d3f3fe3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fff5950190e95818b3559b1f5097778002dd99573c8e03f0d13ec8b3b92e2f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-03-26T01:32:00Z",
    "title_canon_sha256": "69be98ec864450b8e1f51cc5164b62cc78f18be544e076125c1d7cd9d1f34e55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.09735",
    "kind": "arxiv",
    "version": 2
  }
}