Pith Number

pith:WEA4PXTI

pith:2015:WEA4PXTICEMN3S4OXTWHSY6SVN

not attested not anchored not stored refs pending

Examples of K-unstable Fano manifolds with the Picard number one

Kento Fujita

arxiv:1508.04290 v2 · 2015-08-18 · math.AG · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WEA4PXTICEMN3S4OXTWHSY6SVN}

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	2026-05-18T01:35:00.442558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b101c7de681118ddcb8ebcec7963d2ab6847ac1db58f4eeb9ea44efc363ec4b2

Aliases

arxiv: 1508.04290 · arxiv_version: 1508.04290v2 · doi: 10.48550/arxiv.1508.04290 · pith_short_12: WEA4PXTICEMN · pith_short_16: WEA4PXTICEMN3S4O · pith_short_8: WEA4PXTI

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/WEA4PXTICEMN3S4OXTWHSY6SVN \
  | 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: b101c7de681118ddcb8ebcec7963d2ab6847ac1db58f4eeb9ea44efc363ec4b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "913e7c55fca8030b48af25ebfa07a87ba7604384dad2d61f5bf0386ff580bfd6",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-08-18T12:25:32Z",
    "title_canon_sha256": "d792171931429468ce96fd0bde3e41148bb46815252d2dab9dd3698814812909"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04290",
    "kind": "arxiv",
    "version": 2
  }
}