Pith Number

pith:7D5WPQI2

pith:2018:7D5WPQI25YRRMJMDALHEQXJJY6

not attested not anchored not stored refs pending

Fano Kaleidoscopes and their generalizations

Francesca Merola, Marco Buratti

arxiv:1801.02519 v1 · 2018-01-08 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7D5WPQI25YRRMJMDALHEQXJJY6}

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	2026-05-18T00:26:31.282447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8fb67c11aee2316258302ce485d29c792195043d7c8c7f1568291a6223d8b74

Aliases

arxiv: 1801.02519 · arxiv_version: 1801.02519v1 · doi: 10.48550/arxiv.1801.02519 · pith_short_12: 7D5WPQI25YRR · pith_short_16: 7D5WPQI25YRRMJMD · pith_short_8: 7D5WPQI2

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/7D5WPQI25YRRMJMDALHEQXJJY6 \
  | 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: f8fb67c11aee2316258302ce485d29c792195043d7c8c7f1568291a6223d8b74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2633a65e174e47248a87d82bd382ca5153c8d92968a07735925c5054643bca59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-01-08T15:48:22Z",
    "title_canon_sha256": "c12421f1a56c26282cd7f1550514dcbaae8b1cf692af34d513b695dc0135e08c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.02519",
    "kind": "arxiv",
    "version": 1
  }
}