Pith Number

pith:RKBUW75C

pith:2016:RKBUW75CJXIYWJQ3EOQVI6IBKW

not attested not anchored not stored refs pending

On stable rationality of Fano threefolds and del Pezzo fibrations

Brendan Hassett, Yuri Tschinkel

arxiv:1601.07074 v1 · 2016-01-26 · 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{RKBUW75CJXIYWJQ3EOQVI6IBKW}

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	2026-05-18T01:21:57.544122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a834b7fa24dd18b261b23a154790155a46e0ca0a99ebd985e5d99978074d7e4

Aliases

arxiv: 1601.07074 · arxiv_version: 1601.07074v1 · doi: 10.48550/arxiv.1601.07074 · pith_short_12: RKBUW75CJXIY · pith_short_16: RKBUW75CJXIYWJQ3 · pith_short_8: RKBUW75C

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/RKBUW75CJXIYWJQ3EOQVI6IBKW \
  | 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: 8a834b7fa24dd18b261b23a154790155a46e0ca0a99ebd985e5d99978074d7e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5862fcd767826cfb62222af6934ccd32428539daa6945c36f4c2304822cb5c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-01-26T15:50:49Z",
    "title_canon_sha256": "86c6612bf000457ebb941b1e0ede5ec180efb1953125aa11a9b3297754605a04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.07074",
    "kind": "arxiv",
    "version": 1
  }
}