Pith Number

pith:DITNN72Q

pith:2011:DITNN72QBKBA2HNSQR2HAPRGH5

not attested not anchored not stored refs pending

Equations and syzygies of some Kalman varieties

Steven V Sam

arxiv:1105.5756 v2 · 2011-05-29 · math.AC · 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{DITNN72QBKBA2HNSQR2HAPRGH5}

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	2026-05-18T03:46:31.817990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a26d6ff500a820d1db28474703e263f784cdfadbac80e3b6339008c92344e82

Aliases

arxiv: 1105.5756 · arxiv_version: 1105.5756v2 · doi: 10.48550/arxiv.1105.5756 · pith_short_12: DITNN72QBKBA · pith_short_16: DITNN72QBKBA2HNS · pith_short_8: DITNN72Q

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/DITNN72QBKBA2HNSQR2HAPRGH5 \
  | 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: 1a26d6ff500a820d1db28474703e263f784cdfadbac80e3b6339008c92344e82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b952b5e266ada23509047d94a44b9431aa556b413463180b6362ed636119ec52",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2011-05-29T05:25:01Z",
    "title_canon_sha256": "dc607ae1afd05a32c3dea5953f3d5c7e69d216ec5860f87c3641fcbf2d99ad0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.5756",
    "kind": "arxiv",
    "version": 2
  }
}