Pith Number

pith:PF3OQESM

pith:2017:PF3OQESMEA4FGQP3OYUJUGEBVB

not attested not anchored not stored refs pending

Cox ring of the generic fiber

Antonio Laface, Luca Ugaglia

arxiv:1708.02797 v2 · 2017-08-09 · 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{PF3OQESMEA4FGQP3OYUJUGEBVB}

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	2026-05-17T23:43:56.903621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7976e8124c20385341fb76289a1881a86ff725804fb33508cacc684d45043537

Aliases

arxiv: 1708.02797 · arxiv_version: 1708.02797v2 · doi: 10.48550/arxiv.1708.02797 · pith_short_12: PF3OQESMEA4F · pith_short_16: PF3OQESMEA4FGQP3 · pith_short_8: PF3OQESM

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/PF3OQESMEA4FGQP3OYUJUGEBVB \
  | 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: 7976e8124c20385341fb76289a1881a86ff725804fb33508cacc684d45043537

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86cd7ddd5333a0ac00bb195a2765ab8a5ef8200e76182775b3977890cefaabc5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-08-09T12:10:10Z",
    "title_canon_sha256": "f4d2cee8a160553854240e1b2e68094506ac128d6e8447d9eb76b80948dde1d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.02797",
    "kind": "arxiv",
    "version": 2
  }
}