Pith Number

pith:FYP2OE5S

pith:2019:FYP2OE5SRAJ2XZQHU7UWKOHVMY

not attested not anchored not stored refs pending

On projective threefolds of general type with p_g=2

Matteo Penegini, Meng Chen, Yong Hu

arxiv:1901.08191 v1 · 2019-01-24 · 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{FYP2OE5SRAJ2XZQHU7UWKOHVMY}

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	2026-05-17T23:55:37.695906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e1fa713b28813abe607a7e96538f5661bb62f132d1c33cb6914d247d6f37550

Aliases

arxiv: 1901.08191 · arxiv_version: 1901.08191v1 · doi: 10.48550/arxiv.1901.08191 · pith_short_12: FYP2OE5SRAJ2 · pith_short_16: FYP2OE5SRAJ2XZQH · pith_short_8: FYP2OE5S

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/FYP2OE5SRAJ2XZQHU7UWKOHVMY \
  | 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: 2e1fa713b28813abe607a7e96538f5661bb62f132d1c33cb6914d247d6f37550

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6aef9eed0b34b462c1a03d117680995de8b98db827e42e986e37c2f0c16504f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-01-24T01:46:18Z",
    "title_canon_sha256": "15e54eb8794a6862e0d4c9fa4c653928b060664a40605fb27974408299e78ab3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08191",
    "kind": "arxiv",
    "version": 1
  }
}