Pith Number

pith:A5ZMVEDI

pith:2019:A5ZMVEDINQ6YMLAKTNG3QALBVP

not attested not anchored not stored refs pending

Algebraic cycles and very special cubic fourfolds

Robert Laterveer

arxiv:1901.04811 v1 · 2019-01-15 · 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{A5ZMVEDINQ6YMLAKTNG3QALBVP}

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	2026-05-17T23:56:21.668547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0772ca90686c3d862c0a9b4db80161abc0419edfbdf0174e3779f717f3eaffac

Aliases

arxiv: 1901.04811 · arxiv_version: 1901.04811v1 · doi: 10.48550/arxiv.1901.04811 · pith_short_12: A5ZMVEDINQ6Y · pith_short_16: A5ZMVEDINQ6YMLAK · pith_short_8: A5ZMVEDI

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/A5ZMVEDINQ6YMLAKTNG3QALBVP \
  | 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: 0772ca90686c3d862c0a9b4db80161abc0419edfbdf0174e3779f717f3eaffac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96cae94b0fb37c1140efe3a578ebb534d197ef6c906f4fc94a3f6a1e57da3fb8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-01-15T13:29:07Z",
    "title_canon_sha256": "c7f5b3acd99790fd84345e00bfa344618b5030b81ebae230fb1438f7c88ee860"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04811",
    "kind": "arxiv",
    "version": 1
  }
}