Pith Number

pith:BBL2WVTN

pith:2013:BBL2WVTNTTBUIWX345CV4ZHI4Q

not attested not anchored not stored refs pending

Orbit Parametrizations for K3 Surfaces

Abhinav Kumar, Manjul Bhargava, Wei Ho

arxiv:1312.0898 v2 · 2013-12-03 · math.AG · math.NT · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BBL2WVTNTTBUIWX345CV4ZHI4Q}

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	2026-05-18T00:41:13.368440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0857ab566d9cc3445afbe7455e64e8e43698d5389cfd76cc7679507e7bfb2e66

Aliases

arxiv: 1312.0898 · arxiv_version: 1312.0898v2 · doi: 10.48550/arxiv.1312.0898 · pith_short_12: BBL2WVTNTTBU · pith_short_16: BBL2WVTNTTBUIWX3 · pith_short_8: BBL2WVTN

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/BBL2WVTNTTBUIWX345CV4ZHI4Q \
  | 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: 0857ab566d9cc3445afbe7455e64e8e43698d5389cfd76cc7679507e7bfb2e66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab7ff5121d2c1203934388b05edbdd2a90eb986fbc000708d7c5493699a51218",
    "cross_cats_sorted": [
      "math.NT",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-12-03T18:33:48Z",
    "title_canon_sha256": "f003b1a9c0c7b42a91cbeb5e51267e34a4846cd2290f008e4651f4c0022ae458"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.0898",
    "kind": "arxiv",
    "version": 2
  }
}