Pith Number

pith:FDCNWLC7

pith:2013:FDCNWLC75JL5NJU6IL2HFO6TZ6

not attested not anchored not stored refs pending

Computations with modified diagonals

Kieran G. O'Grady

arxiv:1311.0757 v3 · 2013-11-04 · 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{FDCNWLC75JL5NJU6IL2HFO6TZ6}

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	2026-05-18T02:44:01.970941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28c4db2c5fea57d6a69e42f472bbd3cf9bca7bdfea74eefeb74de35244bd93f1

Aliases

arxiv: 1311.0757 · arxiv_version: 1311.0757v3 · doi: 10.48550/arxiv.1311.0757 · pith_short_12: FDCNWLC75JL5 · pith_short_16: FDCNWLC75JL5NJU6 · pith_short_8: FDCNWLC7

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/FDCNWLC75JL5NJU6IL2HFO6TZ6 \
  | 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: 28c4db2c5fea57d6a69e42f472bbd3cf9bca7bdfea74eefeb74de35244bd93f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97720112dc7dae70b7a1e4b32070d84be70b94074228d4c58836c6a64e5b17b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-11-04T16:27:50Z",
    "title_canon_sha256": "0a6cd013e7f9e638c1e68e9dd5a102e5abf0457ad7860c0320d07e4f92f67735"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0757",
    "kind": "arxiv",
    "version": 3
  }
}