Pith Number

pith:BNAD7I4W

pith:2017:BNAD7I4WPPDFX4A5YQGLD5EWPV

not attested not anchored not stored refs pending

Picard-Fuchs operators for octic arrangements I (The case of orphans)

Duco van Straten, Slawomir Cynk

arxiv:1709.09752 v1 · 2017-09-27 · math.AG · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BNAD7I4WPPDFX4A5YQGLD5EWPV}

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	2026-05-18T00:34:06.871608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b403fa3967bc65bf01dc40cb1f4967d596abec794894b9828d9bd390a410f33

Aliases

arxiv: 1709.09752 · arxiv_version: 1709.09752v1 · doi: 10.48550/arxiv.1709.09752 · pith_short_12: BNAD7I4WPPDF · pith_short_16: BNAD7I4WPPDFX4A5 · pith_short_8: BNAD7I4W

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/BNAD7I4WPPDFX4A5YQGLD5EWPV \
  | 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: 0b403fa3967bc65bf01dc40cb1f4967d596abec794894b9828d9bd390a410f33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06de6c89297e411a754510baa975854d789d33ab4becd3b719adb51ba22ef47a",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-09-27T22:51:48Z",
    "title_canon_sha256": "8661395614bd6483c9db04786e9cc340895b8b4dd2e483b530a8db45211ee8ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09752",
    "kind": "arxiv",
    "version": 1
  }
}