Pith Number

pith:Q54DJMTN

pith:2014:Q54DJMTNMP5ZQN3GIGPWHITKMS

not attested not anchored not stored refs pending

Varieties of Picard rank one as components of ample divisors

Andrea Luigi Tironi

arxiv:1402.0839 v1 · 2014-02-04 · 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{Q54DJMTNMP5ZQN3GIGPWHITKMS}

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	2026-05-18T03:00:11.859099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

877834b26d63fb983766419f63a26a64bbf457d41625c3f64929ea772ae7bf9f

Aliases

arxiv: 1402.0839 · arxiv_version: 1402.0839v1 · doi: 10.48550/arxiv.1402.0839 · pith_short_12: Q54DJMTNMP5Z · pith_short_16: Q54DJMTNMP5ZQN3G · pith_short_8: Q54DJMTN

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/Q54DJMTNMP5ZQN3GIGPWHITKMS \
  | 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: 877834b26d63fb983766419f63a26a64bbf457d41625c3f64929ea772ae7bf9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32bb1af2e425d752c01d5625e7f47ec988d0f71759fa6dfe97887efdac98c3c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-02-04T19:35:11Z",
    "title_canon_sha256": "162016a0683b3487eb01325231fbc712b98d3cc16d8d2859751b4b0cb960eb0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.0839",
    "kind": "arxiv",
    "version": 1
  }
}