Pith Number

pith:OJFVEUQ2

pith:2017:OJFVEUQ2YAXTBEJGUOJJPAGBZS

not attested not anchored not stored refs pending

On the Picard number of Fano 6-folds with a non-small contraction

Taku Suzuki

arxiv:1703.07700 v1 · 2017-03-22 · 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{OJFVEUQ2YAXTBEJGUOJJPAGBZS}

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	2026-05-18T00:48:06.341222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

724b52521ac02f309126a3929780c1cc97cfa7dc96c9bc0ffed59c935d4ee7b2

Aliases

arxiv: 1703.07700 · arxiv_version: 1703.07700v1 · doi: 10.48550/arxiv.1703.07700 · pith_short_12: OJFVEUQ2YAXT · pith_short_16: OJFVEUQ2YAXTBEJG · pith_short_8: OJFVEUQ2

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/OJFVEUQ2YAXTBEJGUOJJPAGBZS \
  | 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: 724b52521ac02f309126a3929780c1cc97cfa7dc96c9bc0ffed59c935d4ee7b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e573cf5b854e7596bfb21691012011a0475a2ab5ea4401eb8b34f05d04956954",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-03-22T15:13:32Z",
    "title_canon_sha256": "eddacb417f98dcf8b7e1ee5bea528422aecd9143d65f511577130ae74ca1194a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07700",
    "kind": "arxiv",
    "version": 1
  }
}