Pith Number

pith:3B4BFVFF

pith:2016:3B4BFVFFWB7RTWZ7XVRJ6LXIR2

not attested not anchored not stored refs pending

Motivic obstruction to rationality of a very general cubic hypersurface in $\mathbb P^5$

Vladimir Guletskii

arxiv:1605.09434 v3 · 2016-05-30 · 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{3B4BFVFFWB7RTWZ7XVRJ6LXIR2}

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.

Cited by

1 paper in Pith

Representability of codimension three cycles

Receipt and verification

First computed	2026-05-18T00:18:05.480520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d87812d4a5b07f19db3fbd629f2ee88ebcc7f19ab3b0d2d4a1a3f042c7e77262

Aliases

arxiv: 1605.09434 · arxiv_version: 1605.09434v3 · doi: 10.48550/arxiv.1605.09434 · pith_short_12: 3B4BFVFFWB7R · pith_short_16: 3B4BFVFFWB7RTWZ7 · pith_short_8: 3B4BFVFF

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/3B4BFVFFWB7RTWZ7XVRJ6LXIR2 \
  | 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: d87812d4a5b07f19db3fbd629f2ee88ebcc7f19ab3b0d2d4a1a3f042c7e77262

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d977d31509a9c3efa6e3c0d0694d905e5422e6e5969e3e53b1dd930bc6dae35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-05-30T22:16:22Z",
    "title_canon_sha256": "8791ee5fb480859abb74d029b11fa2e7b5085b098192140347727b2a9b17b040"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.09434",
    "kind": "arxiv",
    "version": 3
  }
}