Pith Number

pith:NHKIWFYD

pith:2010:NHKIWFYDXYTM5VX6NLG47TQ4QP

not attested not anchored not stored refs pending

Projections of Mukai Varieties

Michal Kapustka

arxiv:1005.5557 v4 · 2010-05-30 · 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{NHKIWFYDXYTM5VX6NLG47TQ4QP}

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	2026-05-18T03:10:37.784780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69d48b1703be26ced6fe6acdcfce1c83eaa5084beebbf7bba457193e0544c4d2

Aliases

arxiv: 1005.5557 · arxiv_version: 1005.5557v4 · doi: 10.48550/arxiv.1005.5557 · pith_short_12: NHKIWFYDXYTM · pith_short_16: NHKIWFYDXYTM5VX6 · pith_short_8: NHKIWFYD

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/NHKIWFYDXYTM5VX6NLG47TQ4QP \
  | 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: 69d48b1703be26ced6fe6acdcfce1c83eaa5084beebbf7bba457193e0544c4d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16646adffb5da4d653b75c7884c699f2f7b0c3c0aafbb92bafa671f0f90928fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2010-05-30T19:39:17Z",
    "title_canon_sha256": "736ce9f4a703c871f50b474cac6beee606968fa05407d078010edb855a9bb792"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.5557",
    "kind": "arxiv",
    "version": 4
  }
}