Pith Number

pith:FSLGPZM7

pith:2019:FSLGPZM7WCPC6ENSNKWVQGIHOE

not attested not anchored not stored refs pending

Rationality of $\mathbb{Q}$-Fano threefolds of large Fano index

Yuri Prokhorov

arxiv:1903.07105 v1 · 2019-03-17 · 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{FSLGPZM7WCPC6ENSNKWVQGIHOE}

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	2026-05-17T23:51:04.203145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c9667e59fb09e2f11b26aad5819077133c775c92fe85e7c9e38ef08426a453b

Aliases

arxiv: 1903.07105 · arxiv_version: 1903.07105v1 · doi: 10.48550/arxiv.1903.07105 · pith_short_12: FSLGPZM7WCPC · pith_short_16: FSLGPZM7WCPC6ENS · pith_short_8: FSLGPZM7

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/FSLGPZM7WCPC6ENSNKWVQGIHOE \
  | 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: 2c9667e59fb09e2f11b26aad5819077133c775c92fe85e7c9e38ef08426a453b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5457e305447bc2a1859e5893abf126879efe547868f0bd3d48bac7f6da219c35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-03-17T15:26:37Z",
    "title_canon_sha256": "4b189aa7b0543750dda938aed07d2d9ae45a7b1d09107d5e9baccb360c8900a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07105",
    "kind": "arxiv",
    "version": 1
  }
}