Pith Number

pith:P72K3SEA

pith:2019:P72K3SEARKEW5AXAIV3ZPIJEDH

not attested not anchored not stored refs pending

On the Chow ring of certain hypersurfaces in a Grassmannian

Robert Laterveer

arxiv:1901.04809 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{P72K3SEARKEW5AXAIV3ZPIJEDH}

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	2026-05-17T23:56:21.684730Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ff4adc8808a896e82e0457797a12419f1377c8a6de3fea20090f181c2152fed

Aliases

arxiv: 1901.04809 · arxiv_version: 1901.04809v1 · doi: 10.48550/arxiv.1901.04809 · pith_short_12: P72K3SEARKEW · pith_short_16: P72K3SEARKEW5AXA · pith_short_8: P72K3SEA

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/P72K3SEARKEW5AXAIV3ZPIJEDH \
  | 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: 7ff4adc8808a896e82e0457797a12419f1377c8a6de3fea20090f181c2152fed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc5b28a2e8df9a48fc01951ffe484229e0b798ecc8ffebd78c08ca2f2f4302fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-01-15T13:28:37Z",
    "title_canon_sha256": "b12ca2cd5ed4c187a3ee2a1a96a50c8f50c6aba49bc5f1f2bbb91c7f95b76293"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04809",
    "kind": "arxiv",
    "version": 1
  }
}