Pith Number

pith:23R7TYZF

pith:2014:23R7TYZFS77S4ZLB3UH23Q6RM6

not attested not anchored not stored refs pending

On the quaternionic manifolds whose twistor spaces are Fano manifolds

Radu Pantilie

arxiv:1411.2225 v2 · 2014-11-09 · math.DG · 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{23R7TYZFS77S4ZLB3UH23Q6RM6}

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	2026-05-18T02:34:44.600191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6e3f9e32597ff2e6561dd0fadc3d167ad3f9ebf916d8c56489fa5c238386773

Aliases

arxiv: 1411.2225 · arxiv_version: 1411.2225v2 · doi: 10.48550/arxiv.1411.2225 · pith_short_12: 23R7TYZFS77S · pith_short_16: 23R7TYZFS77S4ZLB · pith_short_8: 23R7TYZF

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/23R7TYZFS77S4ZLB3UH23Q6RM6 \
  | 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: d6e3f9e32597ff2e6561dd0fadc3d167ad3f9ebf916d8c56489fa5c238386773

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b2564e993326ac6eb3ec2b582a4a5d608a88c2a59a05e1e018c977a9b997953",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-11-09T12:35:09Z",
    "title_canon_sha256": "2736e4b04b9a9f04b0b5cb533b6d3ff1027adccc932043100f7436d8fdbd3ee3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.2225",
    "kind": "arxiv",
    "version": 2
  }
}