Pith Number

pith:BCUK65LM

pith:2018:BCUK65LMSH3XKTXZS4RRXOA2IE

not attested not anchored not stored refs pending

Computing projective equivalences of special algebraic varieties

Jan Vr\v{s}ek, Michal Bizzarri, Miroslav L\'avi\v{c}ka

arxiv:1806.05827 v1 · 2018-06-15 · cs.CG · 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{BCUK65LMSH3XKTXZS4RRXOA2IE}

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	2026-05-18T00:13:09.338701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08a8af756c91f7754ef997231bb81a41285fb48ab414a4f6a2a3a5cf7ac9146b

Aliases

arxiv: 1806.05827 · arxiv_version: 1806.05827v1 · doi: 10.48550/arxiv.1806.05827 · pith_short_12: BCUK65LMSH3X · pith_short_16: BCUK65LMSH3XKTXZ · pith_short_8: BCUK65LM

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/BCUK65LMSH3XKTXZS4RRXOA2IE \
  | 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: 08a8af756c91f7754ef997231bb81a41285fb48ab414a4f6a2a3a5cf7ac9146b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66475d0cb19c2fe6d91e603ef488c1764f6971cb3f07494040b8e81953015812",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-06-15T07:05:38Z",
    "title_canon_sha256": "b6099942b88f9bccf241195ed0de194f0733f463afe8aac25a6f8e23bdd5d4bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.05827",
    "kind": "arxiv",
    "version": 1
  }
}