Pith Number

pith:PPUFQKGS

pith:2016:PPUFQKGS63PU4MB5IHVJ76UGA6

not attested not anchored not stored refs pending

Weighted complete intersection del Pezzo surfaces

Evgeny Mayanskiy

arxiv:1608.02049 v1 · 2016-08-06 · 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{PPUFQKGS63PU4MB5IHVJ76UGA6}

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	2026-05-18T01:09:41.078346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7be85828d2f6df4e303d41ea9ffa860787714072b85b047d39041f00d6a6c543

Aliases

arxiv: 1608.02049 · arxiv_version: 1608.02049v1 · doi: 10.48550/arxiv.1608.02049 · pith_short_12: PPUFQKGS63PU · pith_short_16: PPUFQKGS63PU4MB5 · pith_short_8: PPUFQKGS

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/PPUFQKGS63PU4MB5IHVJ76UGA6 \
  | 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: 7be85828d2f6df4e303d41ea9ffa860787714072b85b047d39041f00d6a6c543

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4e5501041a2cffcefc1ef13d5550e756a4cfa47d337a77b4a4e03ac5eaa2c86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-08-06T01:20:38Z",
    "title_canon_sha256": "270ab791e32b39377a4c3ec03b156ec212d5ac3d9873f6341f76dc11aef5c89c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.02049",
    "kind": "arxiv",
    "version": 1
  }
}