Pith Number

pith:TZKCFDIL

pith:2015:TZKCFDILZDN3HX373UFM6DJA63

not attested not anchored not stored refs pending

Explicit log Fano structures on blow-ups of projective spaces

Alex Massarenti, Carolina Araujo

arxiv:1505.02460 v1 · 2015-05-11 · 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{TZKCFDILZDN3HX373UFM6DJA63}

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	2026-05-18T00:44:28.388059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e54228d0bc8dbb3df7fdd0acf0d20f6f47521330f86975730ae61ce6ff2c153

Aliases

arxiv: 1505.02460 · arxiv_version: 1505.02460v1 · doi: 10.48550/arxiv.1505.02460 · pith_short_12: TZKCFDILZDN3 · pith_short_16: TZKCFDILZDN3HX37 · pith_short_8: TZKCFDIL

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/TZKCFDILZDN3HX373UFM6DJA63 \
  | 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: 9e54228d0bc8dbb3df7fdd0acf0d20f6f47521330f86975730ae61ce6ff2c153

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27ed45ab06656046f050d2c7c5f53240f15227296d9025daad856fdf743614a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-05-11T00:44:17Z",
    "title_canon_sha256": "20c50d23fadf13863152153964cef3c635b656552ea368a0e84ff28384d033f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02460",
    "kind": "arxiv",
    "version": 1
  }
}