Pith Number

pith:K4BVODZX

pith:2013:K4BVODZXCPBIE2YPINCV4G5T32

not attested not anchored not stored refs pending

On the life and scientific work of Gino Fano

Alberto Collino, Alberto Conte, Alessandro Verra

arxiv:1311.7177 v1 · 2013-11-27 · math.HO · 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{K4BVODZXCPBIE2YPINCV4G5T32}

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	2026-05-18T03:05:57.052470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5703570f3713c2826b0f43455e1bb3de84b2707edba90d103171bd9e523a31ac

Aliases

arxiv: 1311.7177 · arxiv_version: 1311.7177v1 · doi: 10.48550/arxiv.1311.7177 · pith_short_12: K4BVODZXCPBI · pith_short_16: K4BVODZXCPBIE2YP · pith_short_8: K4BVODZX

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/K4BVODZXCPBIE2YPINCV4G5T32 \
  | 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: 5703570f3713c2826b0f43455e1bb3de84b2707edba90d103171bd9e523a31ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12b619bb673f01ef38b45db68b6df9223ed44449ccfeb00c55f9816a12599f57",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2013-11-27T23:29:33Z",
    "title_canon_sha256": "b56a3eaeaf4cb01f01a2ba53200b48df1892f835a2e5fd7b144aaa5daf3bb018"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7177",
    "kind": "arxiv",
    "version": 1
  }
}