Pith Number

pith:DG6L4RA6

pith:2009:DG6L4RA6FVJH66RGLQ22ONJERY

not attested not anchored not stored refs pending

Rigidity of Mori cone for Fano manifolds

Jaroslaw A. Wisniewski

arxiv:0905.3485 v1 · 2009-05-21 · 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{DG6L4RA6FVJH66RGLQ22ONJERY}

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	2026-05-18T02:58:03.164824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19bcbe441e2d527f7a265c35a735248e01ca3c6bf4ba10248cb505663a73d7ee

Aliases

arxiv: 0905.3485 · arxiv_version: 0905.3485v1 · doi: 10.48550/arxiv.0905.3485 · pith_short_12: DG6L4RA6FVJH · pith_short_16: DG6L4RA6FVJH66RG · pith_short_8: DG6L4RA6

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/DG6L4RA6FVJH66RGLQ22ONJERY \
  | 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: 19bcbe441e2d527f7a265c35a735248e01ca3c6bf4ba10248cb505663a73d7ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25fa2bf6e8f1b02d44a283003fc9dfe4970ce0e15e9beadf63dadc8fad594219",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-05-21T12:56:35Z",
    "title_canon_sha256": "cc02cfb747b262aaf8a252c027a7615fe37c1e94708863de752a2fc9f3d70d90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3485",
    "kind": "arxiv",
    "version": 1
  }
}